Set jarsigner-version to 1.3.1
diff --git a/eclipse-tools/emf-graphical-viewer/pom.xml b/eclipse-tools/emf-graphical-viewer/pom.xml
index 58c2c0e..8e7e9b1 100644
--- a/eclipse-tools/emf-graphical-viewer/pom.xml
+++ b/eclipse-tools/emf-graphical-viewer/pom.xml
@@ -130,7 +130,7 @@
 					<plugin>
 						<groupId>org.eclipse.cbi.maven.plugins</groupId>
 						<artifactId>eclipse-jarsigner-plugin</artifactId>
-						<version>1.1.3</version>
+						<version>1.3.1</version>
 						<executions>
 							<execution>
 								<id>sign</id>
diff --git a/eclipse-tools/sca2amalthea/pom.xml b/eclipse-tools/sca2amalthea/pom.xml
index 7cf07dd..5886956 100644
--- a/eclipse-tools/sca2amalthea/pom.xml
+++ b/eclipse-tools/sca2amalthea/pom.xml
@@ -130,7 +130,7 @@
 					<plugin>
 						<groupId>org.eclipse.cbi.maven.plugins</groupId>
 						<artifactId>eclipse-jarsigner-plugin</artifactId>
-						<version>1.1.3</version>
+						<version>1.3.1</version>
 						<executions>
 							<execution>
 								<id>sign</id>