diff --git a/compiler/compiler.version/src/org/jetbrains/kotlin/config/KotlinCompilerVersion.java b/compiler/compiler.version/src/org/jetbrains/kotlin/config/KotlinCompilerVersion.java
index 75a6b1619c1..e7b25336582 100644
--- a/compiler/compiler.version/src/org/jetbrains/kotlin/config/KotlinCompilerVersion.java
+++ b/compiler/compiler.version/src/org/jetbrains/kotlin/config/KotlinCompilerVersion.java
@@ -19,7 +19,7 @@ public class KotlinCompilerVersion {
     // Binaries produced by this compiler with that language version (or any future language version) are going to be marked
     // as "pre-release" and will not be loaded by release versions of the compiler.
     // Change this value before and after every major release
-    private static final boolean IS_PRE_RELEASE = true;
+    private static final boolean IS_PRE_RELEASE = false;
 
     public static final String TEST_IS_PRE_RELEASE_SYSTEM_PROPERTY = "kotlin.test.is.pre.release";
 
diff --git a/compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/output.fir.txt b/compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/output.fir.txt
index f3692a006dc..a367d1d0eb4 100644
--- a/compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/output.fir.txt
+++ b/compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/output.fir.txt
@@ -1,4 +1,32 @@
+error: pre-release classes were found in dependencies. Remove them from the classpath, recompile with a release compiler or use '-Xskip-prerelease-check' to suppress errors
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:5:16: error: class 'a.A' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+fun baz(param: A, nested: A.Nested) {
+               ^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:5:27: error: class 'a.A.Nested' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+fun baz(param: A, nested: A.Nested) {
+                          ^^^^^^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:6:23: error: class 'a.A' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val constructor = A()
+                      ^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:7:18: error: class 'a.A.Nested' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val nested = A.Nested()
+                 ^^^^^^^^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:8:22: error: class 'a.A' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val methodCall = param.method()
+                     ^^^^^
 compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:8:28: error: unresolved reference 'method'.
     val methodCall = param.method()
                            ^^^^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:9:30: error: class 'a.A' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val supertype = object : A() {}
+                             ^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:11:13: error: class 'a.AKt' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val x = foo()
+            ^^^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:12:13: error: class 'a.AKt' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val y = bar
+            ^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:13:5: error: class 'a.AKt' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    bar = 239
+    ^^^
 COMPILATION_ERROR
diff --git a/compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/output.txt b/compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/output.txt
index 87961103417..274e457d9d3 100644
--- a/compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/output.txt
+++ b/compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/output.txt
@@ -1,4 +1,41 @@
+error: pre-release classes were found in dependencies. Remove them from the classpath, recompile with a release compiler or use '-Xskip-prerelease-check' to suppress errors
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:5:16: error: class 'a.A' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+fun baz(param: A, nested: A.Nested) {
+               ^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:5:27: error: class 'a.A' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+fun baz(param: A, nested: A.Nested) {
+                          ^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:5:29: error: class 'a.A.Nested' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+fun baz(param: A, nested: A.Nested) {
+                            ^^^^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:6:23: error: class 'a.A' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val constructor = A()
+                      ^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:7:18: error: class 'a.A' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val nested = A.Nested()
+                 ^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:7:20: error: class 'a.A.Nested' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val nested = A.Nested()
+                   ^^^^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:8:22: error: class 'a.A' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val methodCall = param.method()
+                     ^^^^^
 compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:8:28: error: unresolved reference: method
     val methodCall = param.method()
                            ^^^^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:9:30: error: class 'a.A' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val supertype = object : A() {}
+                             ^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:11:13: error: class 'a.AKt' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val x = foo()
+            ^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:12:13: error: class 'a.AKt' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val y = bar
+            ^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:13:5: error: class 'a.AKt' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    bar = 239
+    ^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibrary/source.kt:14:12: error: class 'a.AKt' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val z: TA = ""
+           ^^
 COMPILATION_ERROR
diff --git a/compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/output.fir.txt b/compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/output.fir.txt
index 6b40d333822..2534252ef7f 100644
--- a/compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/output.fir.txt
+++ b/compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/output.fir.txt
@@ -1,4 +1,32 @@
+error: pre-release classes were found in dependencies. Remove them from the classpath, recompile with a release compiler or use '-Xskip-prerelease-check' to suppress errors
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:5:16: error: package 'a' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+fun baz(param: A, nested: A.Nested) {
+               ^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:5:27: error: package 'a' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+fun baz(param: A, nested: A.Nested) {
+                          ^^^^^^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:6:23: error: package 'a' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val constructor = A()
+                      ^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:7:18: error: package 'a' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val nested = A.Nested()
+                 ^^^^^^^^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:8:22: error: package 'a' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val methodCall = param.method()
+                     ^^^^^
 compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:8:28: error: unresolved reference 'method'.
     val methodCall = param.method()
                            ^^^^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:9:30: error: package 'a' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val supertype = object : A() {}
+                             ^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:11:13: error: package 'a' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val x = foo()
+            ^^^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:12:13: error: package 'a' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val y = bar
+            ^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:13:5: error: package 'a' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    bar = 239
+    ^^^
 COMPILATION_ERROR
diff --git a/compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/output.txt b/compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/output.txt
index 23b37606014..15b749c1595 100644
--- a/compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/output.txt
+++ b/compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/output.txt
@@ -1,4 +1,41 @@
+error: pre-release classes were found in dependencies. Remove them from the classpath, recompile with a release compiler or use '-Xskip-prerelease-check' to suppress errors
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:5:16: error: package 'a' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+fun baz(param: A, nested: A.Nested) {
+               ^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:5:27: error: package 'a' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+fun baz(param: A, nested: A.Nested) {
+                          ^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:5:29: error: package 'a' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+fun baz(param: A, nested: A.Nested) {
+                            ^^^^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:6:23: error: package 'a' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val constructor = A()
+                      ^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:7:18: error: package 'a' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val nested = A.Nested()
+                 ^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:7:20: error: package 'a' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val nested = A.Nested()
+                   ^^^^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:8:22: error: package 'a' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val methodCall = param.method()
+                     ^^^^^
 compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:8:28: error: unresolved reference: method
     val methodCall = param.method()
                            ^^^^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:9:30: error: package 'a' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val supertype = object : A() {}
+                             ^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:11:13: error: package 'a' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val x = foo()
+            ^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:12:13: error: package 'a' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val y = bar
+            ^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:13:5: error: package 'a' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    bar = 239
+    ^^^
+compiler/testData/compileKotlinAgainstCustomBinaries/releaseCompilerAgainstPreReleaseLibraryJs/source.kt:14:12: error: package 'a' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler
+    val z: TA = ""
+           ^^
 COMPILATION_ERROR