diff --git a/common/kotlinx-coroutines-core-common/src/channels/Produce.kt b/common/kotlinx-coroutines-core-common/src/channels/Produce.kt
index b7e75de..47bce68 100644
--- a/common/kotlinx-coroutines-core-common/src/channels/Produce.kt
+++ b/common/kotlinx-coroutines-core-common/src/channels/Produce.kt
@@ -2,11 +2,14 @@
  * Copyright 2016-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
  */
 
-package kotlinx.coroutines.experimental.channels
+@file:UseExperimental(ExperimentalTypeInference::class)
 
-import kotlinx.coroutines.experimental.*
-import kotlinx.coroutines.experimental.channels.Channel.Factory.UNLIMITED
-import kotlin.coroutines.experimental.*
+package kotlinx.coroutines.channels
+
+import kotlinx.coroutines.*
+import kotlinx.coroutines.channels.Channel.Factory.UNLIMITED
+import kotlin.coroutines.*
+import kotlin.experimental.*
 
 /**
  * Scope for [produce][CoroutineScope.produce] coroutine builder.
@@ -68,10 +71,11 @@
  * @param block the coroutine code.
  */
 @ExperimentalCoroutinesApi
+@BuilderInference
 public fun <E> CoroutineScope.produce(
     context: CoroutineContext = EmptyCoroutineContext,
     capacity: Int = 0,
-    block: suspend ProducerScope<E>.() -> Unit
+    @BuilderInference block: suspend ProducerScope<E>.() -> Unit
 ): ReceiveChannel<E> {
     val channel = Channel<E>(capacity)
     val newContext = newCoroutineContext(context)
@@ -84,12 +88,13 @@
  * @suppress **This an internal API and should not be used from general code.**
  *           onCompletion parameter will be redesigned.
  */
+@BuilderInference
 @InternalCoroutinesApi
 public fun <E> CoroutineScope.produce(
     context: CoroutineContext = EmptyCoroutineContext,
     capacity: Int = 0,
     onCompletion: CompletionHandler? = null,
-    block: suspend ProducerScope<E>.() -> Unit
+    @BuilderInference block: suspend ProducerScope<E>.() -> Unit
 ): ReceiveChannel<E> {
     val channel = Channel<E>(capacity)
     val newContext = newCoroutineContext(context)
@@ -107,13 +112,13 @@
 @Deprecated(
     message = "Standalone coroutine builders are deprecated, use extensions on CoroutineScope instead",
     replaceWith = ReplaceWith("GlobalScope.produce(context, capacity, onCompletion, block)",
-        imports = ["kotlinx.coroutines.experimental.GlobalScope", "kotlinx.coroutines.experimental.channels.produce"])
+        imports = ["kotlinx.coroutines.GlobalScope", "kotlinx.coroutines.channels.produce"])
 )
 public fun <E> produce(
     context: CoroutineContext = Dispatchers.Default,
     capacity: Int = 0,
     onCompletion: CompletionHandler? = null,
-    block: suspend ProducerScope<E>.() -> Unit
+    @BuilderInference block: suspend ProducerScope<E>.() -> Unit
 ): ReceiveChannel<E> =
     GlobalScope.produce(context, capacity, onCompletion, block)
 
@@ -125,14 +130,14 @@
 @Deprecated(
     message = "Standalone coroutine builders are deprecated, use extensions on CoroutineScope instead",
     replaceWith = ReplaceWith("GlobalScope.produce(context + parent, capacity, onCompletion, block)",
-        imports = ["kotlinx.coroutines.experimental.GlobalScope", "kotlinx.coroutines.experimental.channels.produce"])
+        imports = ["kotlinx.coroutines.GlobalScope", "kotlinx.coroutines.channels.produce"])
 )
 public fun <E> produce(
     context: CoroutineContext = Dispatchers.Default,
     capacity: Int = 0,
     parent: Job? = null,
     onCompletion: CompletionHandler? = null,
-    block: suspend ProducerScope<E>.() -> Unit
+    @BuilderInference block: suspend ProducerScope<E>.() -> Unit
 ): ReceiveChannel<E> =
     GlobalScope.produce(context + (parent ?: EmptyCoroutineContext), capacity, onCompletion, block)
 
@@ -142,7 +147,7 @@
     context: CoroutineContext = Dispatchers.Default,
     capacity: Int = 0,
     parent: Job? = null,
-    block: suspend ProducerScope<E>.() -> Unit
+    @BuilderInference block: suspend ProducerScope<E>.() -> Unit
 ): ReceiveChannel<E> = GlobalScope.produce(context + (parent ?: EmptyCoroutineContext), capacity, block = block)
 
 /** @suppress **Deprecated**: Binary compatibility */
@@ -150,7 +155,7 @@
 public fun <E> produce(
     context: CoroutineContext = Dispatchers.Default,
     capacity: Int = 0,
-    block: suspend ProducerScope<E>.() -> Unit
+    @BuilderInference block: suspend ProducerScope<E>.() -> Unit
 ): ProducerJob<E> =
     GlobalScope.produce(context, capacity, block = block) as ProducerJob<E>
 
@@ -161,7 +166,7 @@
 public fun <E> buildChannel(
     context: CoroutineContext,
     capacity: Int = 0,
-    block: suspend ProducerScope<E>.() -> Unit
+    @BuilderInference block: suspend ProducerScope<E>.() -> Unit
 ): ProducerJob<E> =
     GlobalScope.produce(context, capacity, block = block) as ProducerJob<E>