diff --git a/gson/pom.xml b/gson/pom.xml
index 1799ef03..f2cf9a48 100644
--- a/gson/pom.xml
+++ b/gson/pom.xml
@@ -201,7 +201,7 @@
           <dependency>
             <groupId>com.guardsquare</groupId>
             <artifactId>proguard-core</artifactId>
-            <version>9.1.0</version>
+            <version>9.1.1</version>
           </dependency>
         </dependencies>
         <configuration>
diff --git a/shrinker-test/pom.xml b/shrinker-test/pom.xml
index c4bd4f26..4b789e03 100644
--- a/shrinker-test/pom.xml
+++ b/shrinker-test/pom.xml
@@ -114,7 +114,7 @@
           <dependency>
             <groupId>com.guardsquare</groupId>
             <artifactId>proguard-core</artifactId>
-            <version>9.1.0</version>
+            <version>9.1.1</version>
           </dependency>
         </dependencies>
         <configuration>