diff --git a/.idea/artifacts/dist.xml b/.idea/artifacts/dist.xml
index 3a7e56567a7..ac99b577e3c 100644
--- a/.idea/artifacts/dist.xml
+++ b/.idea/artifacts/dist.xml
@@ -8,16 +8,16 @@
         </element>
       </element>
       <element id="file-copy" path="$PROJECT_DIR$/build/build.txt" />
-      <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-minimal-for-test/1.3.50-dev-397/9537914625d42146d9ebdd50cc7427c1116958dd/kotlin-stdlib-minimal-for-test-1.3.50-dev-397.jar" output-file-name="kotlin-stdlib-minimal-for-test.jar" />
+      <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-minimal-for-test/1.3.50-dev-455/8b1ab64efeb4c2030834c9f7c2f09e13e8ef9230/kotlin-stdlib-minimal-for-test-1.3.50-dev-455.jar" output-file-name="kotlin-stdlib-minimal-for-test.jar" />
       <element id="directory" name="common">
-        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-common/1.3.50-dev-397/41d9c6981aea1e2b3be9491c0d69f068cfeda9d8/kotlin-stdlib-common-1.3.50-dev-397.jar" output-file-name="kotlin-stdlib-common.jar" />
-        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-common/1.3.50-dev-397/908a2bdb953a6cc1e0ee306066b435c7469bc1/kotlin-stdlib-common-1.3.50-dev-397-sources.jar" output-file-name="kotlin-stdlib-common-sources.jar" />
+        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-common/1.3.50-dev-455/c1e5eaac0191584f9da494ac8e48626f8463e6a/kotlin-stdlib-common-1.3.50-dev-455.jar" output-file-name="kotlin-stdlib-common.jar" />
+        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-common/1.3.50-dev-455/51e07839d3876992c49979b893067efb9dc41656/kotlin-stdlib-common-1.3.50-dev-455-sources.jar" output-file-name="kotlin-stdlib-common-sources.jar" />
       </element>
       <element id="directory" name="js">
-        <element id="extracted-dir" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-js/1.3.50-dev-397/8fecb29089c335c4cb37f2ae37f204bd8c0a015/kotlin-stdlib-js-1.3.50-dev-397.jar" path-in-jar="/" />
+        <element id="extracted-dir" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-js/1.3.50-dev-455/cb005c5615b58cad42814fe0b0ba606289b1dcfa/kotlin-stdlib-js-1.3.50-dev-455.jar" path-in-jar="/" />
       </element>
       <element id="directory" name="maven">
-        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.3.50-dev-397/49551e2d0590be904a7178f881a90753425fe8e0/kotlin-stdlib-1.3.50-dev-397-sources.jar" output-file-name="kotlin-stdlib-sources.jar" />
+        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.3.50-dev-455/28ef2b45c6356183179b6e5e4c354a784aaf734/kotlin-stdlib-1.3.50-dev-455-sources.jar" output-file-name="kotlin-stdlib-sources.jar" />
       </element>
       <element id="directory" name="kotlinc">
         <element id="artifact" artifact-name="kotlinc" />
diff --git a/.idea/artifacts/kotlin_compiler_jar.xml b/.idea/artifacts/kotlin_compiler_jar.xml
index 1f03648e866..1d2635afeb0 100644
--- a/.idea/artifacts/kotlin_compiler_jar.xml
+++ b/.idea/artifacts/kotlin_compiler_jar.xml
@@ -8,7 +8,7 @@
         </element>
         <element id="file-copy" path="$PROJECT_DIR$/prepare/compiler/build/tmp/packCompiler/MANIFEST.MF" />
       </element>
-      <element id="extracted-dir" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/builtins/1.3.50-dev-397/842ec330289185e9ea136dd86f2846b6ff9a8a10/builtins-1.3.50-dev-397.jar" path-in-jar="/" />
+      <element id="extracted-dir" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/builtins/1.3.50-dev-455/4c4aca3d15222a28839dc453a71faf82bf58759d/builtins-1.3.50-dev-455.jar" path-in-jar="/" />
       <element id="extracted-dir" path="$PROJECT_DIR$/dependencies/repo/kotlin.build/ideaIC/191.6707.61/artifacts/lib/asm-all-7.0.1.jar" path-in-jar="/" />
       <element id="extracted-dir" path="$PROJECT_DIR$/dependencies/repo/kotlin.build/ideaIC/191.6707.61/artifacts/lib/guava-25.1-jre.jar" path-in-jar="/" />
       <element id="extracted-dir" path="$PROJECT_DIR$/dependencies/repo/kotlin.build/intellij-core/191.6707.61/artifacts/intellij-core.jar" path-in-jar="/" />
diff --git a/.idea/artifacts/kotlinc.xml b/.idea/artifacts/kotlinc.xml
index c7be86444b7..f65b5e11121 100644
--- a/.idea/artifacts/kotlinc.xml
+++ b/.idea/artifacts/kotlinc.xml
@@ -226,14 +226,14 @@
             <element id="file-copy" path="$PROJECT_DIR$/plugins/android-extensions/android-extensions-compiler/build/tmp/jar/MANIFEST.MF" />
           </element>
         </element>
-        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-jdk8/1.3.50-dev-397/cea97f07f62c8c851aca7dc9710d9c0214b585ad/kotlin-stdlib-jdk8-1.3.50-dev-397.jar" output-file-name="kotlin-stdlib-jdk8.jar" />
-        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-jdk7/1.3.50-dev-397/37b7a5e6a0178c1ef97d486c2baaab0b07e119d9/kotlin-stdlib-jdk7-1.3.50-dev-397.jar" output-file-name="kotlin-stdlib-jdk7.jar" />
-        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.3.50-dev-397/a49478f35e92b4bf2e1a3bd628dc71e561d2eb04/kotlin-stdlib-1.3.50-dev-397.jar" output-file-name="kotlin-stdlib.jar" />
-        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-jdk7/1.3.50-dev-397/d87ad86ff1d0f960c89bee95c4f643297e54f9f1/kotlin-stdlib-jdk7-1.3.50-dev-397-sources.jar" output-file-name="kotlin-stdlib-jdk7-sources.jar" />
-        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-jdk8/1.3.50-dev-397/1f51a4f91853cfea7a295fd3154b11ed16d64932/kotlin-stdlib-jdk8-1.3.50-dev-397-sources.jar" output-file-name="kotlin-stdlib-jdk8-sources.jar" />
-        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-js/1.3.50-dev-397/a6fb09cf5de9f1afa10699ae2b58156067307cd/kotlin-stdlib-js-1.3.50-dev-397-sources.jar" />
-        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-js/1.3.50-dev-397/8fecb29089c335c4cb37f2ae37f204bd8c0a015/kotlin-stdlib-js-1.3.50-dev-397.jar" output-file-name="kotlin-stdlib-js.jar" />
-        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.3.50-dev-397/49551e2d0590be904a7178f881a90753425fe8e0/kotlin-stdlib-1.3.50-dev-397-sources.jar" output-file-name="kotlin-stdlib-sources.jar" />
+        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-jdk8/1.3.50-dev-455/2aaa856e71dc6ed54091c409f1b8e03131cafef/kotlin-stdlib-jdk8-1.3.50-dev-455.jar" output-file-name="kotlin-stdlib-jdk8.jar" />
+        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-jdk7/1.3.50-dev-455/fee02717bdd24151ea4c5583e1b7dd71974bf5e0/kotlin-stdlib-jdk7-1.3.50-dev-455.jar" output-file-name="kotlin-stdlib-jdk7.jar" />
+        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.3.50-dev-455/8f0648084f51d32388749224f7a19e012e7085d9/kotlin-stdlib-1.3.50-dev-455.jar" output-file-name="kotlin-stdlib.jar" />
+        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-jdk7/1.3.50-dev-455/656242b6f4598651bc3cffebc17da1580a08076a/kotlin-stdlib-jdk7-1.3.50-dev-455-sources.jar" output-file-name="kotlin-stdlib-jdk7-sources.jar" />
+        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-jdk8/1.3.50-dev-455/df2711141ec96ec3d137f6ee8f1f374511e8e023/kotlin-stdlib-jdk8-1.3.50-dev-455-sources.jar" output-file-name="kotlin-stdlib-jdk8-sources.jar" />
+        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-js/1.3.50-dev-455/fad4e283a677c0c3789fbcd4ec57405a13d5bd0f/kotlin-stdlib-js-1.3.50-dev-455-sources.jar" />
+        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-js/1.3.50-dev-455/cb005c5615b58cad42814fe0b0ba606289b1dcfa/kotlin-stdlib-js-1.3.50-dev-455.jar" output-file-name="kotlin-stdlib-js.jar" />
+        <element id="file-copy" path="$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.3.50-dev-455/28ef2b45c6356183179b6e5e4c354a784aaf734/kotlin-stdlib-1.3.50-dev-455-sources.jar" output-file-name="kotlin-stdlib-sources.jar" />
         <element id="artifact" artifact-name="kotlin-compiler.jar" />
         <element id="artifact" artifact-name="kotlin-reflect.jar" />
         <element id="artifact" artifact-name="kotlin-daemon-client.jar" />
diff --git a/build.gradle.kts b/build.gradle.kts
index 597ac14e23f..3c55ae27a73 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -9,7 +9,7 @@ buildscript {
     extra["defaultSnapshotVersion"] = "1.3-SNAPSHOT"
 
     // when updating please also update JPS artifacts configuration: https://jetbrains.quip.com/zzGUAYSJ6gv3/JPS-Build-update-bootstrap
-    kotlinBootstrapFrom(BootstrapOption.TeamCity("1.3.50-dev-397", onlySuccessBootstrap = false))
+    kotlinBootstrapFrom(BootstrapOption.TeamCity("1.3.50-dev-455", onlySuccessBootstrap = false))
 
     repositories {
         bootstrapKotlinRepo?.let(::maven)