fixup! fixup! fixup! fixup! fixup! DONOTMERGE; test with dokka snapshot

libraries/tools/kotlin-stdlib-docs/gradle.properties

diff --git a/libraries/tools/kotlin-stdlib-docs/gradle.properties b/libraries/tools/kotlin-stdlib-docs/gradle.properties
index 5d4250b..4031384 100644
--- a/libraries/tools/kotlin-stdlib-docs/gradle.properties
+++ b/libraries/tools/kotlin-stdlib-docs/gradle.properties
@@ -1,3 +1,3 @@
 org.gradle.jvmargs=-Xmx6G
-dokka_version=1.8.20-dev-213
+dokka_version=1.9.0-dev-218
 systemProp.dokka.shouldDisplaySinceKotlin=true
\ No newline at end of file