diff --git a/MasterPassword/Java/masterpassword-android/pom.xml b/MasterPassword/Java/masterpassword-android/pom.xml
index 906bbfbe..0e54568d 100644
--- a/MasterPassword/Java/masterpassword-android/pom.xml
+++ b/MasterPassword/Java/masterpassword-android/pom.xml
@@ -67,6 +67,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-jarsigner-plugin</artifactId>
+                        <version>1.4</version>
                         <executions>
                             <execution>
                                 <id>signing</id>
diff --git a/MasterPassword/Java/masterpassword-gui/pom.xml b/MasterPassword/Java/masterpassword-gui/pom.xml
index 465812ee..5a2b1b22 100644
--- a/MasterPassword/Java/masterpassword-gui/pom.xml
+++ b/MasterPassword/Java/masterpassword-gui/pom.xml
@@ -97,6 +97,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-jarsigner-plugin</artifactId>
+                        <version>1.4</version>
                         <executions>
                             <execution>
                                 <id>signing</id>