diff --git a/flink-dist-scala/src/main/resources/META-INF/NOTICE b/flink-dist-scala/src/main/resources/META-INF/NOTICE
index b09f87a11cb7f..61b7f982591df 100644
--- a/flink-dist-scala/src/main/resources/META-INF/NOTICE
+++ b/flink-dist-scala/src/main/resources/META-INF/NOTICE
@@ -6,7 +6,7 @@ The Apache Software Foundation (http://www.apache.org/).
 
 The following dependencies all share the same BSD license which you find under licenses/LICENSE.scala.
 
-- org.scala-lang:scala-compiler:2.12.20
-- org.scala-lang:scala-library:2.12.20
-- org.scala-lang:scala-reflect:2.12.20
+- org.scala-lang:scala-compiler:2.12.21
+- org.scala-lang:scala-library:2.12.21
+- org.scala-lang:scala-reflect:2.12.21
 - org.scala-lang.modules:scala-xml_2.12:2.3.0
diff --git a/flink-rpc/flink-rpc-akka/src/main/resources/META-INF/NOTICE b/flink-rpc/flink-rpc-akka/src/main/resources/META-INF/NOTICE
index 0d4a807fc43da..d66a071eef040 100644
--- a/flink-rpc/flink-rpc-akka/src/main/resources/META-INF/NOTICE
+++ b/flink-rpc/flink-rpc-akka/src/main/resources/META-INF/NOTICE
@@ -28,7 +28,7 @@ This project bundles the following dependencies under the Apache Software Licens
 The following dependencies all share the same BSD license which you find under licenses/LICENSE.scala.
 
 - org.scala-lang.modules:scala-java8-compat_2.12:1.0.2
-- org.scala-lang:scala-library:2.12.20
+- org.scala-lang:scala-library:2.12.21
 
 This project bundles the following dependencies under the Creative Commons CC0 "No Rights Reserved".
 
diff --git a/flink-table/flink-table-planner-loader-bundle/src/main/resources/META-INF/NOTICE b/flink-table/flink-table-planner-loader-bundle/src/main/resources/META-INF/NOTICE
index 67365b5f6dd06..ce2fa5ff14b3c 100644
--- a/flink-table/flink-table-planner-loader-bundle/src/main/resources/META-INF/NOTICE
+++ b/flink-table/flink-table-planner-loader-bundle/src/main/resources/META-INF/NOTICE
@@ -6,6 +6,6 @@ The Apache Software Foundation (http://www.apache.org/).
 
 The following dependencies all share the same BSD license which you find under licenses/LICENSE.scala.
 
-- org.scala-lang:scala-compiler:2.12.20
-- org.scala-lang:scala-library:2.12.20
-- org.scala-lang:scala-reflect:2.12.20
+- org.scala-lang:scala-compiler:2.12.21
+- org.scala-lang:scala-library:2.12.21
+- org.scala-lang:scala-reflect:2.12.21
diff --git a/pom.xml b/pom.xml
index 6806c1ee34ed2..af5106489a319 100644
--- a/pom.xml
+++ b/pom.xml
@@ -141,7 +141,7 @@ under the License.
 		<maven.compiler.source>${source.java.version}</maven.compiler.source>
 		<maven.compiler.target>${target.java.version}</maven.compiler.target>
 		<scala.macros.version>2.1.1</scala.macros.version>
-		<scala.version>2.12.20</scala.version>
+		<scala.version>2.12.21</scala.version>
 		<scala.binary.version>2.12</scala.binary.version>
 		<!-- keep FlinkTestcontainersConfigurator.configureZookeeperContainer in sync -->
 		<zookeeper.version>3.7.2</zookeeper.version>
@@ -975,7 +975,7 @@ under the License.
 		<profile>
 			<id>scala-2.12</id>
 			<properties>
-				<scala.version>2.12.20</scala.version>
+				<scala.version>2.12.21</scala.version>
 				<scala.binary.version>2.12</scala.binary.version>
 			</properties>
 			<activation>