diff --git a/libraries/build-docs.xml b/libraries/build-docs.xml
index b40d308e24f..af7594db88f 100644
--- a/libraries/build-docs.xml
+++ b/libraries/build-docs.xml
@@ -50,7 +50,7 @@
     </path>
     <target name="document" depends="clean,preprocess-js-common-and-compile-builtins">
         <dokka samples="stdlib/samples/test" outputDir="${docs.output}/jre8" moduleName="kotlin-stdlib" skipDeprecated="true" outputFormat="${dokka.format}" jdkversion="8" impliedplatforms="JVM,JS"
-               include="stdlib/src/Module.md" noStdlibLink="true" classpathref="stdlib.compile.classpath">
+               include="stdlib/src/Module.md" noStdlibLink="true" classpathref="stdlib.compile.classpath" languageVersion="1.2">
 
             <sourceRoot path="stdlib/src" platforms="JVM"/>
             <sourceRoot path="stdlib/jdk7/src" platforms="JVM,JRE7"/>
@@ -85,7 +85,7 @@
         </dokka>
         <makeurl file="${docs.output}/jre8/kotlin-stdlib/package-list" property="stdlib.package.list"/>
         <dokka outputDir="${docs.output}/jre8" moduleName="kotlin-test" skipDeprecated="true" outputFormat="${dokka.format}" jdkversion="8" impliedplatforms="JVM,JS"
-               include="kotlin.test/Module.md" noStdlibLink="true" classpathref="kotlin-test.compile.classpath">
+               include="kotlin.test/Module.md" noStdlibLink="true" classpathref="kotlin-test.compile.classpath" languageVersion="1.2">
 
             <sourceRoot path="kotlin.test/common/src/main/kotlin" platforms="JVM,JS"/>
             <sourceRoot path="kotlin.test/jvm/src/main/kotlin" platforms="JVM"/>