diff --git a/buildSrc/src/main/kotlin/ActiveContainer.kt b/buildSrc/src/main/kotlin/ActiveContainer.kt
index 50bb053..8100342 100644
--- a/buildSrc/src/main/kotlin/ActiveContainer.kt
+++ b/buildSrc/src/main/kotlin/ActiveContainer.kt
@@ -7,6 +7,7 @@ import com.squareup.kotlinpoet.ParameterizedTypeName.Companion.parameterizedBy
 import com.squareup.kotlinpoet.PropertySpec
 import com.squareup.kotlinpoet.STRING
 import com.squareup.kotlinpoet.TypeName
+import com.squareup.kotlinpoet.WildcardTypeName
 import com.squareup.kotlinpoet.asClassName
 
 object ActiveContainer : FunctionProvider {
@@ -37,10 +38,14 @@ object ActiveContainer : FunctionProvider {
             .defaultValue("ConfigBlock {}")
             .build()
 
+    val projectedContainerEventTypeName =
+        if (publisherType.requiresProjection) WildcardTypeName.producerOf(containerEventTypeName)
+        else containerEventTypeName
+
     val publisherParameter =
         ParameterSpec.builder(
                 "publisher",
-                publisherType.className.parameterizedBy(containerEventTypeName),
+                publisherType.className.parameterizedBy(projectedContainerEventTypeName),
             )
             .build()
 
@@ -48,7 +53,7 @@ object ActiveContainer : FunctionProvider {
         ParameterSpec.builder(
                 "supplier",
                 requestSupplierClassName.parameterizedBy(
-                    publisherType.className.parameterizedBy(containerEventTypeName),
+                    publisherType.className.parameterizedBy(projectedContainerEventTypeName),
                 ),
             )
             .build()
@@ -97,7 +102,7 @@ object ActiveContainer : FunctionProvider {
         ParameterSpec.builder(
                 "supplier",
                 pathVariablesSupplierClassName.parameterizedBy(
-                    publisherType.className.parameterizedBy(containerEventTypeName),
+                    publisherType.className.parameterizedBy(projectedContainerEventTypeName),
                 ),
             )
             .build()
diff --git a/buildSrc/src/main/kotlin/Broadcast.kt b/buildSrc/src/main/kotlin/Broadcast.kt
index 03af4d7..60da63a 100644
--- a/buildSrc/src/main/kotlin/Broadcast.kt
+++ b/buildSrc/src/main/kotlin/Broadcast.kt
@@ -29,10 +29,14 @@ object Broadcast : FunctionProvider {
             .defaultValue("ConfigBlock {}")
             .build()
 
+    val projectedBroadcastEvent =
+        if (publisherType.requiresProjection) WildcardTypeName.producerOf(broadcastEvent)
+        else broadcastEvent
+
     val broadcastEventPublisherParameter =
         ParameterSpec.builder(
                 "publisher",
-                publisherType.className.parameterizedBy(broadcastEvent),
+                publisherType.className.parameterizedBy(projectedBroadcastEvent),
             )
             .build()