diff --git a/src/Internal/Api/All.elm b/src/Internal/Api/All.elm
index 690381c..0c97add 100644
--- a/src/Internal/Api/All.elm
+++ b/src/Internal/Api/All.elm
@@ -31,7 +31,7 @@ sendMessageEvent =
 
 {-| Send a state event into a Matrix room.
 -}
-sendStateEvent : List String -> SendStateKey.SendStateKeyInput -> SendStateKey.SendStateKeyOutput
+sendStateEvent : List String -> Maybe (SendStateKey.SendStateKeyInput -> SendStateKey.SendStateKeyOutput)
 sendStateEvent =
     SendStateKey.sendStateKey
 
diff --git a/src/Internal/Api/SendMessageEvent/Main.elm b/src/Internal/Api/SendMessageEvent/Main.elm
index 526330a..277da06 100644
--- a/src/Internal/Api/SendMessageEvent/Main.elm
+++ b/src/Internal/Api/SendMessageEvent/Main.elm
@@ -13,6 +13,7 @@ sendMessageEvent versions =
     |> VC.sameForVersion "r0.1.0"
     |> VC.sameForVersion "r0.2.0"
     |> VC.sameForVersion "r0.3.0"
+    |> VC.sameForVersion "r0.4.0"
     |> VC.sameForVersion "r0.5.0"
     |> VC.sameForVersion "r0.6.0"
     |> VC.sameForVersion "r0.6.1"
diff --git a/src/Internal/Api/SendStateKey/Api.elm b/src/Internal/Api/SendStateKey/Api.elm
index 7b8c70e..2a91f03 100644
--- a/src/Internal/Api/SendStateKey/Api.elm
+++ b/src/Internal/Api/SendStateKey/Api.elm
@@ -1,6 +1,7 @@
 module Internal.Api.SendStateKey.Api exposing (..)
 
 import Internal.Api.Request as R
+import Internal.Api.SendStateKey.V1.SpecObjects as SO1
 import Internal.Tools.Exceptions as X
 import Json.Decode as D
 import Task exposing (Task)
@@ -15,9 +16,31 @@ type alias SendStateKeyInputV1 =
     , stateKey : String
     }
 
+type alias SendStateKeyOutputV1 =
+    Task X.Error SO1.EventResponse
 
-sendStateKeyV1 : D.Decoder a -> (a -> b) -> SendStateKeyInputV1 -> Task X.Error b
-sendStateKeyV1 decoder mapping data =
+
+sendStateKeyV1 : SendStateKeyInputV1 -> SendStateKeyOutputV1
+sendStateKeyV1 data =
+    R.rawApiCall
+        { headers = R.WithAccessToken data.accessToken
+        , method = "PUT"
+        , baseUrl = data.baseUrl
+        , path = "/_matrix/client/r0/rooms/{roomId}/state/{eventType}/{stateKey}"
+        , pathParams =
+            [ ( "eventType", data.eventType )
+            , ( "roomId", data.roomId )
+            , ( "stateKey", data.stateKey )
+            ]
+        , queryParams = []
+        , bodyParams = [ R.RequiredValue "*" data.content ]
+        , timeout = Nothing
+        , decoder = \_ -> SO1.eventResponseDecoder
+        }
+
+
+sendStateKeyV2 : SendStateKeyInputV1 -> SendStateKeyOutputV1
+sendStateKeyV2 data =
     R.rawApiCall
         { headers = R.WithAccessToken data.accessToken
         , method = "PUT"
@@ -31,5 +54,5 @@ sendStateKeyV1 decoder mapping data =
         , queryParams = []
         , bodyParams = [ R.RequiredValue "*" data.content ]
         , timeout = Nothing
-        , decoder = \_ -> D.map mapping decoder
+        , decoder = \_ -> SO1.eventResponseDecoder
         }
diff --git a/src/Internal/Api/SendStateKey/Main.elm b/src/Internal/Api/SendStateKey/Main.elm
index 65b61ed..4a97703 100644
--- a/src/Internal/Api/SendStateKey/Main.elm
+++ b/src/Internal/Api/SendStateKey/Main.elm
@@ -1,23 +1,34 @@
 module Internal.Api.SendStateKey.Main exposing (..)
 
 import Internal.Api.SendStateKey.Api as Api
-import Internal.Api.SendStateKey.V1_2.Api as V1_2
-import Internal.Api.SendStateKey.V1_3.Api as V1_3
-import Internal.Api.SendStateKey.V1_4.Api as V1_4
-import Internal.Api.SendStateKey.V1_5.Api as V1_5
-import Internal.Api.SendStateKey.V1_5.Objects as O
-import Internal.Api.VersionControl as V
-import Internal.Tools.Exceptions as X
-import Task exposing (Task)
+import Internal.Tools.VersionControl as VC
 
 
-sendStateKey : List String -> SendStateKeyInput -> SendStateKeyOutput
-sendStateKey =
-    V.firstVersion V1_2.packet
-        |> V.updateWith V1_3.packet
-        |> V.updateWith V1_4.packet
-        |> V.updateWith V1_5.packet
-        |> V.toFunction
+sendStateKey : List String -> Maybe (SendStateKeyInput -> SendStateKeyOutput)
+sendStateKey versions =
+    VC.withBottomLayer
+        { current = Api.sendStateKeyV1
+        , version = "r0.0.0"
+        }
+    |> VC.sameForVersion "r0.0.1"
+    |> VC.sameForVersion "r0.1.0"
+    |> VC.sameForVersion "r0.2.0"
+    |> VC.sameForVersion "r0.3.0"
+    |> VC.sameForVersion "r0.4.0"
+    |> VC.sameForVersion "r0.5.0"
+    |> VC.sameForVersion "r0.6.0"
+    |> VC.sameForVersion "r0.6.1"
+    |> VC.addMiddleLayer
+        { downcast = identity
+        , current  = Api.sendStateKeyV2
+        , upcast   = identity
+        , version  = "v1.1"
+        }
+    |> VC.sameForVersion "v1.2"
+    |> VC.sameForVersion "v1.3"
+    |> VC.sameForVersion "v1.4"
+    |> VC.sameForVersion "v1.5"
+    |> VC.mostRecentFromVersionList versions
 
 
 type alias SendStateKeyInput =
@@ -25,4 +36,4 @@ type alias SendStateKeyInput =
 
 
 type alias SendStateKeyOutput =
-    Task X.Error O.EventResponse
+    Api.SendStateKeyOutputV1
diff --git a/src/Internal/Api/SendStateKey/V1_3/Objects.elm b/src/Internal/Api/SendStateKey/V1/SpecObjects.elm
similarity index 58%
rename from src/Internal/Api/SendStateKey/V1_3/Objects.elm
rename to src/Internal/Api/SendStateKey/V1/SpecObjects.elm
index 0feefbc..3a4cf36 100644
--- a/src/Internal/Api/SendStateKey/V1_3/Objects.elm
+++ b/src/Internal/Api/SendStateKey/V1/SpecObjects.elm
@@ -1,38 +1,37 @@
-module Internal.Api.SendStateKey.V1_3.Objects exposing
-    ( EventResponse
+module Internal.Api.SendStateKey.V1.SpecObjects exposing (
+    EventResponse
     , encodeEventResponse
     , eventResponseDecoder
     )
-
 {-| Automatically generated 'SpecObjects'
 
-Last generated at Unix time 1673279712
-
+Last generated at Unix time 1675965633
 -}
 
+
 import Internal.Tools.EncodeExtra exposing (maybeObject)
+
 import Json.Decode as D
 import Json.Encode as E
 
-
 {-| A response confirming that an event has been sent.
 -}
-type alias EventResponse =
-    { eventId : String
+type alias EventResponse =  {
+    eventId : String
     }
 
-
 encodeEventResponse : EventResponse -> E.Value
 encodeEventResponse data =
-    maybeObject
-        [ ( "event_id", Just <| E.string data.eventId )
-        ]
+    maybeObject [
+        ("event_id", Just <| E.string data.eventId)
+            ]
 
 
 eventResponseDecoder : D.Decoder EventResponse
 eventResponseDecoder =
     D.map
         (\a ->
-            { eventId = a }
-        )
-        (D.field "event_id" D.string)
+             { eventId=a})
+            (D.field "event_id" D.string)
+
+
diff --git a/src/Internal/Api/SendStateKey/V1_2/SpecObjects.yaml b/src/Internal/Api/SendStateKey/V1/SpecObjects.yaml
similarity index 92%
rename from src/Internal/Api/SendStateKey/V1_2/SpecObjects.yaml
rename to src/Internal/Api/SendStateKey/V1/SpecObjects.yaml
index f5eaebe..9b619b4 100644
--- a/src/Internal/Api/SendStateKey/V1_2/SpecObjects.yaml
+++ b/src/Internal/Api/SendStateKey/V1/SpecObjects.yaml
@@ -1,4 +1,4 @@
-version: v1.2
+version: v1
 name: SpecObjects
 objects:
   EventResponse:
diff --git a/src/Internal/Api/SendStateKey/V1_2/Api.elm b/src/Internal/Api/SendStateKey/V1_2/Api.elm
deleted file mode 100644
index 3456b95..0000000
--- a/src/Internal/Api/SendStateKey/V1_2/Api.elm
+++ /dev/null
@@ -1,16 +0,0 @@
-module Internal.Api.SendStateKey.V1_2.Api exposing (..)
-
-import Internal.Api.SendStateKey.Api as Api
-import Internal.Api.SendStateKey.V1_2.Convert as C
-import Internal.Api.SendStateKey.V1_2.Objects as O
-import Internal.Api.SendStateKey.V1_2.Upcast as U
-import Internal.Api.VersionControl as V
-
-
-packet : V.SingleVersion () () Api.SendStateKeyInputV1 O.EventResponse
-packet =
-    { version = "v1.2"
-    , downcast = \_ -> ()
-    , current = Api.sendStateKeyV1 O.eventResponseDecoder C.convert
-    , upcast = U.upcast
-    }
diff --git a/src/Internal/Api/SendStateKey/V1_2/Convert.elm b/src/Internal/Api/SendStateKey/V1_2/Convert.elm
deleted file mode 100644
index ef2ca42..0000000
--- a/src/Internal/Api/SendStateKey/V1_2/Convert.elm
+++ /dev/null
@@ -1,9 +0,0 @@
-module Internal.Api.SendStateKey.V1_2.Convert exposing (..)
-
-import Internal.Api.SendStateKey.V1_2.Objects as O
-import Internal.Api.SendStateKey.V1_2.SpecObjects as SO
-
-
-convert : SO.EventResponse -> O.EventResponse
-convert =
-    identity
diff --git a/src/Internal/Api/SendStateKey/V1_2/Objects.elm b/src/Internal/Api/SendStateKey/V1_2/Objects.elm
deleted file mode 100644
index f7c6e6b..0000000
--- a/src/Internal/Api/SendStateKey/V1_2/Objects.elm
+++ /dev/null
@@ -1,38 +0,0 @@
-module Internal.Api.SendStateKey.V1_2.Objects exposing
-    ( EventResponse
-    , encodeEventResponse
-    , eventResponseDecoder
-    )
-
-{-| Automatically generated 'SpecObjects'
-
-Last generated at Unix time 1673279712
-
--}
-
-import Internal.Tools.EncodeExtra exposing (maybeObject)
-import Json.Decode as D
-import Json.Encode as E
-
-
-{-| A response confirming that an event has been sent.
--}
-type alias EventResponse =
-    { eventId : String
-    }
-
-
-encodeEventResponse : EventResponse -> E.Value
-encodeEventResponse data =
-    maybeObject
-        [ ( "event_id", Just <| E.string data.eventId )
-        ]
-
-
-eventResponseDecoder : D.Decoder EventResponse
-eventResponseDecoder =
-    D.map
-        (\a ->
-            { eventId = a }
-        )
-        (D.field "event_id" D.string)
diff --git a/src/Internal/Api/SendStateKey/V1_2/Objects.yaml b/src/Internal/Api/SendStateKey/V1_2/Objects.yaml
deleted file mode 100644
index f5eaebe..0000000
--- a/src/Internal/Api/SendStateKey/V1_2/Objects.yaml
+++ /dev/null
@@ -1,9 +0,0 @@
-version: v1.2
-name: SpecObjects
-objects:
-  EventResponse:
-    description: A response confirming that an event has been sent.
-    fields:
-      event_id:
-        type: string
-        required: true
diff --git a/src/Internal/Api/SendStateKey/V1_2/SpecObjects.elm b/src/Internal/Api/SendStateKey/V1_2/SpecObjects.elm
deleted file mode 100644
index b9467bc..0000000
--- a/src/Internal/Api/SendStateKey/V1_2/SpecObjects.elm
+++ /dev/null
@@ -1,38 +0,0 @@
-module Internal.Api.SendStateKey.V1_2.SpecObjects exposing
-    ( EventResponse
-    , encodeEventResponse
-    , eventResponseDecoder
-    )
-
-{-| Automatically generated 'SpecObjects'
-
-Last generated at Unix time 1673279712
-
--}
-
-import Internal.Tools.EncodeExtra exposing (maybeObject)
-import Json.Decode as D
-import Json.Encode as E
-
-
-{-| A response confirming that an event has been sent.
--}
-type alias EventResponse =
-    { eventId : String
-    }
-
-
-encodeEventResponse : EventResponse -> E.Value
-encodeEventResponse data =
-    maybeObject
-        [ ( "event_id", Just <| E.string data.eventId )
-        ]
-
-
-eventResponseDecoder : D.Decoder EventResponse
-eventResponseDecoder =
-    D.map
-        (\a ->
-            { eventId = a }
-        )
-        (D.field "event_id" D.string)
diff --git a/src/Internal/Api/SendStateKey/V1_2/Upcast.elm b/src/Internal/Api/SendStateKey/V1_2/Upcast.elm
deleted file mode 100644
index 9b887a4..0000000
--- a/src/Internal/Api/SendStateKey/V1_2/Upcast.elm
+++ /dev/null
@@ -1,9 +0,0 @@
-module Internal.Api.SendStateKey.V1_2.Upcast exposing (..)
-
-import Internal.Api.SendStateKey.V1_2.Objects as O
-import Internal.Config.Leaking as L
-
-
-upcast : () -> O.EventResponse
-upcast _ =
-    { eventId = L.eventId }
diff --git a/src/Internal/Api/SendStateKey/V1_3/Api.elm b/src/Internal/Api/SendStateKey/V1_3/Api.elm
deleted file mode 100644
index b16ed28..0000000
--- a/src/Internal/Api/SendStateKey/V1_3/Api.elm
+++ /dev/null
@@ -1,17 +0,0 @@
-module Internal.Api.SendStateKey.V1_3.Api exposing (..)
-
-import Internal.Api.SendStateKey.Api as Api
-import Internal.Api.SendStateKey.V1_2.Objects as PO
-import Internal.Api.SendStateKey.V1_3.Convert as C
-import Internal.Api.SendStateKey.V1_3.Objects as O
-import Internal.Api.SendStateKey.V1_3.Upcast as U
-import Internal.Api.VersionControl as V
-
-
-packet : V.SingleVersion Api.SendStateKeyInputV1 PO.EventResponse Api.SendStateKeyInputV1 O.EventResponse
-packet =
-    { version = "v1.3"
-    , downcast = identity
-    , current = Api.sendStateKeyV1 O.eventResponseDecoder C.convert
-    , upcast = U.upcast
-    }
diff --git a/src/Internal/Api/SendStateKey/V1_3/Convert.elm b/src/Internal/Api/SendStateKey/V1_3/Convert.elm
deleted file mode 100644
index 287f75d..0000000
--- a/src/Internal/Api/SendStateKey/V1_3/Convert.elm
+++ /dev/null
@@ -1,9 +0,0 @@
-module Internal.Api.SendStateKey.V1_3.Convert exposing (..)
-
-import Internal.Api.SendStateKey.V1_3.Objects as O
-import Internal.Api.SendStateKey.V1_3.SpecObjects as SO
-
-
-convert : SO.EventResponse -> O.EventResponse
-convert =
-    identity
diff --git a/src/Internal/Api/SendStateKey/V1_3/Objects.yaml b/src/Internal/Api/SendStateKey/V1_3/Objects.yaml
deleted file mode 100644
index e330263..0000000
--- a/src/Internal/Api/SendStateKey/V1_3/Objects.yaml
+++ /dev/null
@@ -1,9 +0,0 @@
-version: v1.3
-name: SpecObjects
-objects:
-  EventResponse:
-    description: A response confirming that an event has been sent.
-    fields:
-      event_id:
-        type: string
-        required: true
diff --git a/src/Internal/Api/SendStateKey/V1_3/SpecObjects.elm b/src/Internal/Api/SendStateKey/V1_3/SpecObjects.elm
deleted file mode 100644
index b00c428..0000000
--- a/src/Internal/Api/SendStateKey/V1_3/SpecObjects.elm
+++ /dev/null
@@ -1,38 +0,0 @@
-module Internal.Api.SendStateKey.V1_3.SpecObjects exposing
-    ( EventResponse
-    , encodeEventResponse
-    , eventResponseDecoder
-    )
-
-{-| Automatically generated 'SpecObjects'
-
-Last generated at Unix time 1673279712
-
--}
-
-import Internal.Tools.EncodeExtra exposing (maybeObject)
-import Json.Decode as D
-import Json.Encode as E
-
-
-{-| A response confirming that an event has been sent.
--}
-type alias EventResponse =
-    { eventId : String
-    }
-
-
-encodeEventResponse : EventResponse -> E.Value
-encodeEventResponse data =
-    maybeObject
-        [ ( "event_id", Just <| E.string data.eventId )
-        ]
-
-
-eventResponseDecoder : D.Decoder EventResponse
-eventResponseDecoder =
-    D.map
-        (\a ->
-            { eventId = a }
-        )
-        (D.field "event_id" D.string)
diff --git a/src/Internal/Api/SendStateKey/V1_3/SpecObjects.yaml b/src/Internal/Api/SendStateKey/V1_3/SpecObjects.yaml
deleted file mode 100644
index e330263..0000000
--- a/src/Internal/Api/SendStateKey/V1_3/SpecObjects.yaml
+++ /dev/null
@@ -1,9 +0,0 @@
-version: v1.3
-name: SpecObjects
-objects:
-  EventResponse:
-    description: A response confirming that an event has been sent.
-    fields:
-      event_id:
-        type: string
-        required: true
diff --git a/src/Internal/Api/SendStateKey/V1_3/Upcast.elm b/src/Internal/Api/SendStateKey/V1_3/Upcast.elm
deleted file mode 100644
index 59b36dc..0000000
--- a/src/Internal/Api/SendStateKey/V1_3/Upcast.elm
+++ /dev/null
@@ -1,9 +0,0 @@
-module Internal.Api.SendStateKey.V1_3.Upcast exposing (..)
-
-import Internal.Api.SendStateKey.V1_2.Objects as PO
-import Internal.Api.SendStateKey.V1_3.Objects as O
-
-
-upcast : PO.EventResponse -> O.EventResponse
-upcast =
-    identity
diff --git a/src/Internal/Api/SendStateKey/V1_4/Api.elm b/src/Internal/Api/SendStateKey/V1_4/Api.elm
deleted file mode 100644
index 1aa8eae..0000000
--- a/src/Internal/Api/SendStateKey/V1_4/Api.elm
+++ /dev/null
@@ -1,17 +0,0 @@
-module Internal.Api.SendStateKey.V1_4.Api exposing (..)
-
-import Internal.Api.SendStateKey.Api as Api
-import Internal.Api.SendStateKey.V1_3.Objects as PO
-import Internal.Api.SendStateKey.V1_4.Convert as C
-import Internal.Api.SendStateKey.V1_4.Objects as O
-import Internal.Api.SendStateKey.V1_4.Upcast as U
-import Internal.Api.VersionControl as V
-
-
-packet : V.SingleVersion Api.SendStateKeyInputV1 PO.EventResponse Api.SendStateKeyInputV1 O.EventResponse
-packet =
-    { version = "v1.4"
-    , downcast = identity
-    , current = Api.sendStateKeyV1 O.eventResponseDecoder C.convert
-    , upcast = U.upcast
-    }
diff --git a/src/Internal/Api/SendStateKey/V1_4/Convert.elm b/src/Internal/Api/SendStateKey/V1_4/Convert.elm
deleted file mode 100644
index b942f33..0000000
--- a/src/Internal/Api/SendStateKey/V1_4/Convert.elm
+++ /dev/null
@@ -1,9 +0,0 @@
-module Internal.Api.SendStateKey.V1_4.Convert exposing (..)
-
-import Internal.Api.SendStateKey.V1_4.Objects as O
-import Internal.Api.SendStateKey.V1_4.SpecObjects as SO
-
-
-convert : SO.EventResponse -> O.EventResponse
-convert =
-    identity
diff --git a/src/Internal/Api/SendStateKey/V1_4/Objects.elm b/src/Internal/Api/SendStateKey/V1_4/Objects.elm
deleted file mode 100644
index c298ec0..0000000
--- a/src/Internal/Api/SendStateKey/V1_4/Objects.elm
+++ /dev/null
@@ -1,38 +0,0 @@
-module Internal.Api.SendStateKey.V1_4.Objects exposing
-    ( EventResponse
-    , encodeEventResponse
-    , eventResponseDecoder
-    )
-
-{-| Automatically generated 'SpecObjects'
-
-Last generated at Unix time 1673279712
-
--}
-
-import Internal.Tools.EncodeExtra exposing (maybeObject)
-import Json.Decode as D
-import Json.Encode as E
-
-
-{-| A response confirming that an event has been sent.
--}
-type alias EventResponse =
-    { eventId : String
-    }
-
-
-encodeEventResponse : EventResponse -> E.Value
-encodeEventResponse data =
-    maybeObject
-        [ ( "event_id", Just <| E.string data.eventId )
-        ]
-
-
-eventResponseDecoder : D.Decoder EventResponse
-eventResponseDecoder =
-    D.map
-        (\a ->
-            { eventId = a }
-        )
-        (D.field "event_id" D.string)
diff --git a/src/Internal/Api/SendStateKey/V1_4/Objects.yaml b/src/Internal/Api/SendStateKey/V1_4/Objects.yaml
deleted file mode 100644
index 9ab5c91..0000000
--- a/src/Internal/Api/SendStateKey/V1_4/Objects.yaml
+++ /dev/null
@@ -1,9 +0,0 @@
-version: v1.4
-name: SpecObjects
-objects:
-  EventResponse:
-    description: A response confirming that an event has been sent.
-    fields:
-      event_id:
-        type: string
-        required: true
diff --git a/src/Internal/Api/SendStateKey/V1_4/SpecObjects.elm b/src/Internal/Api/SendStateKey/V1_4/SpecObjects.elm
deleted file mode 100644
index 435f6de..0000000
--- a/src/Internal/Api/SendStateKey/V1_4/SpecObjects.elm
+++ /dev/null
@@ -1,38 +0,0 @@
-module Internal.Api.SendStateKey.V1_4.SpecObjects exposing
-    ( EventResponse
-    , encodeEventResponse
-    , eventResponseDecoder
-    )
-
-{-| Automatically generated 'SpecObjects'
-
-Last generated at Unix time 1673279712
-
--}
-
-import Internal.Tools.EncodeExtra exposing (maybeObject)
-import Json.Decode as D
-import Json.Encode as E
-
-
-{-| A response confirming that an event has been sent.
--}
-type alias EventResponse =
-    { eventId : String
-    }
-
-
-encodeEventResponse : EventResponse -> E.Value
-encodeEventResponse data =
-    maybeObject
-        [ ( "event_id", Just <| E.string data.eventId )
-        ]
-
-
-eventResponseDecoder : D.Decoder EventResponse
-eventResponseDecoder =
-    D.map
-        (\a ->
-            { eventId = a }
-        )
-        (D.field "event_id" D.string)
diff --git a/src/Internal/Api/SendStateKey/V1_4/SpecObjects.yaml b/src/Internal/Api/SendStateKey/V1_4/SpecObjects.yaml
deleted file mode 100644
index 9ab5c91..0000000
--- a/src/Internal/Api/SendStateKey/V1_4/SpecObjects.yaml
+++ /dev/null
@@ -1,9 +0,0 @@
-version: v1.4
-name: SpecObjects
-objects:
-  EventResponse:
-    description: A response confirming that an event has been sent.
-    fields:
-      event_id:
-        type: string
-        required: true
diff --git a/src/Internal/Api/SendStateKey/V1_4/Upcast.elm b/src/Internal/Api/SendStateKey/V1_4/Upcast.elm
deleted file mode 100644
index 4e46468..0000000
--- a/src/Internal/Api/SendStateKey/V1_4/Upcast.elm
+++ /dev/null
@@ -1,9 +0,0 @@
-module Internal.Api.SendStateKey.V1_4.Upcast exposing (..)
-
-import Internal.Api.SendStateKey.V1_3.Objects as PO
-import Internal.Api.SendStateKey.V1_4.Objects as O
-
-
-upcast : PO.EventResponse -> O.EventResponse
-upcast =
-    identity
diff --git a/src/Internal/Api/SendStateKey/V1_5/Api.elm b/src/Internal/Api/SendStateKey/V1_5/Api.elm
deleted file mode 100644
index 33cc30b..0000000
--- a/src/Internal/Api/SendStateKey/V1_5/Api.elm
+++ /dev/null
@@ -1,17 +0,0 @@
-module Internal.Api.SendStateKey.V1_5.Api exposing (..)
-
-import Internal.Api.SendStateKey.Api as Api
-import Internal.Api.SendStateKey.V1_4.Objects as PO
-import Internal.Api.SendStateKey.V1_5.Convert as C
-import Internal.Api.SendStateKey.V1_5.Objects as O
-import Internal.Api.SendStateKey.V1_5.Upcast as U
-import Internal.Api.VersionControl as V
-
-
-packet : V.SingleVersion Api.SendStateKeyInputV1 PO.EventResponse Api.SendStateKeyInputV1 O.EventResponse
-packet =
-    { version = "v1.5"
-    , downcast = identity
-    , current = Api.sendStateKeyV1 O.eventResponseDecoder C.convert
-    , upcast = U.upcast
-    }
diff --git a/src/Internal/Api/SendStateKey/V1_5/Convert.elm b/src/Internal/Api/SendStateKey/V1_5/Convert.elm
deleted file mode 100644
index aaf010a..0000000
--- a/src/Internal/Api/SendStateKey/V1_5/Convert.elm
+++ /dev/null
@@ -1,9 +0,0 @@
-module Internal.Api.SendStateKey.V1_5.Convert exposing (..)
-
-import Internal.Api.SendStateKey.V1_5.Objects as O
-import Internal.Api.SendStateKey.V1_5.SpecObjects as SO
-
-
-convert : SO.EventResponse -> O.EventResponse
-convert =
-    identity
diff --git a/src/Internal/Api/SendStateKey/V1_5/Objects.elm b/src/Internal/Api/SendStateKey/V1_5/Objects.elm
deleted file mode 100644
index 6303d95..0000000
--- a/src/Internal/Api/SendStateKey/V1_5/Objects.elm
+++ /dev/null
@@ -1,38 +0,0 @@
-module Internal.Api.SendStateKey.V1_5.Objects exposing
-    ( EventResponse
-    , encodeEventResponse
-    , eventResponseDecoder
-    )
-
-{-| Automatically generated 'SpecObjects'
-
-Last generated at Unix time 1673279712
-
--}
-
-import Internal.Tools.EncodeExtra exposing (maybeObject)
-import Json.Decode as D
-import Json.Encode as E
-
-
-{-| A response confirming that an event has been sent.
--}
-type alias EventResponse =
-    { eventId : String
-    }
-
-
-encodeEventResponse : EventResponse -> E.Value
-encodeEventResponse data =
-    maybeObject
-        [ ( "event_id", Just <| E.string data.eventId )
-        ]
-
-
-eventResponseDecoder : D.Decoder EventResponse
-eventResponseDecoder =
-    D.map
-        (\a ->
-            { eventId = a }
-        )
-        (D.field "event_id" D.string)
diff --git a/src/Internal/Api/SendStateKey/V1_5/Objects.yaml b/src/Internal/Api/SendStateKey/V1_5/Objects.yaml
deleted file mode 100644
index ee1cb6f..0000000
--- a/src/Internal/Api/SendStateKey/V1_5/Objects.yaml
+++ /dev/null
@@ -1,9 +0,0 @@
-version: v1.5
-name: SpecObjects
-objects:
-  EventResponse:
-    description: A response confirming that an event has been sent.
-    fields:
-      event_id:
-        type: string
-        required: true
diff --git a/src/Internal/Api/SendStateKey/V1_5/SpecObjects.elm b/src/Internal/Api/SendStateKey/V1_5/SpecObjects.elm
deleted file mode 100644
index a5e4dc5..0000000
--- a/src/Internal/Api/SendStateKey/V1_5/SpecObjects.elm
+++ /dev/null
@@ -1,38 +0,0 @@
-module Internal.Api.SendStateKey.V1_5.SpecObjects exposing
-    ( EventResponse
-    , encodeEventResponse
-    , eventResponseDecoder
-    )
-
-{-| Automatically generated 'SpecObjects'
-
-Last generated at Unix time 1673279712
-
--}
-
-import Internal.Tools.EncodeExtra exposing (maybeObject)
-import Json.Decode as D
-import Json.Encode as E
-
-
-{-| A response confirming that an event has been sent.
--}
-type alias EventResponse =
-    { eventId : String
-    }
-
-
-encodeEventResponse : EventResponse -> E.Value
-encodeEventResponse data =
-    maybeObject
-        [ ( "event_id", Just <| E.string data.eventId )
-        ]
-
-
-eventResponseDecoder : D.Decoder EventResponse
-eventResponseDecoder =
-    D.map
-        (\a ->
-            { eventId = a }
-        )
-        (D.field "event_id" D.string)
diff --git a/src/Internal/Api/SendStateKey/V1_5/SpecObjects.yaml b/src/Internal/Api/SendStateKey/V1_5/SpecObjects.yaml
deleted file mode 100644
index ee1cb6f..0000000
--- a/src/Internal/Api/SendStateKey/V1_5/SpecObjects.yaml
+++ /dev/null
@@ -1,9 +0,0 @@
-version: v1.5
-name: SpecObjects
-objects:
-  EventResponse:
-    description: A response confirming that an event has been sent.
-    fields:
-      event_id:
-        type: string
-        required: true
diff --git a/src/Internal/Api/SendStateKey/V1_5/Upcast.elm b/src/Internal/Api/SendStateKey/V1_5/Upcast.elm
deleted file mode 100644
index adc8e51..0000000
--- a/src/Internal/Api/SendStateKey/V1_5/Upcast.elm
+++ /dev/null
@@ -1,9 +0,0 @@
-module Internal.Api.SendStateKey.V1_5.Upcast exposing (..)
-
-import Internal.Api.SendStateKey.V1_4.Objects as PO
-import Internal.Api.SendStateKey.V1_5.Objects as O
-
-
-upcast : PO.EventResponse -> O.EventResponse
-upcast =
-    identity