diff --git a/libraries/tools/kotlin-stdlib-docs/ant/build.gradle b/libraries/tools/kotlin-stdlib-docs/ant/build.gradle
index 7ccadaa634b..8dac5b80830 100644
--- a/libraries/tools/kotlin-stdlib-docs/ant/build.gradle
+++ b/libraries/tools/kotlin-stdlib-docs/ant/build.gradle
@@ -9,7 +9,7 @@ if (System.getProperty('os.name', '').toLowerCase().contains('windows')) {
 }
 
 
-final String antVersion = "1.10.9"
+final String antVersion = "1.10.11"
 final String antURL = "https://cache-redirector.jetbrains.com/downloads.apache.org/ant/binaries/apache-ant-$antVersion-bin.zip"
 final File antHome = new File(buildDir, "ant-home")
 final File antZip = new File(buildDir, "apache-ant-$antVersion-bin.zip")