diff --git a/functions/slack/pom.xml b/functions/slack/pom.xml
index 065e0240812..7242258ff55 100644
--- a/functions/slack/pom.xml
+++ b/functions/slack/pom.xml
@@ -77,7 +77,7 @@
     <dependency>
       <groupId>com.slack.api</groupId>
       <artifactId>slack-app-backend</artifactId>
-      <version>1.21.1</version>
+      <version>1.21.2</version>
     </dependency>
 
     <!-- The following dependencies are only required for testing -->