diff --git a/pom.xml b/pom.xml
index ca30b3b5..61eddb90 100644
--- a/pom.xml
+++ b/pom.xml
@@ -9,7 +9,7 @@
 		<scm.revision>NO_SCM_REVISION</scm.revision>
 
 		<version.proguard>7.2.0</version.proguard>
-		<version.proguard-core>8.0.6</version.proguard-core>
+		<version.proguard-core>9.1.1</version.proguard-core>
 	</properties>