diff --git a/pom.xml b/pom.xml
index 1771420a..f3b801ea 100644
--- a/pom.xml
+++ b/pom.xml
@@ -140,6 +140,9 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-gpg-plugin</artifactId>
                 <version>1.5</version>
+                <configuration>
+                    <passphrase>${gpg.passphrase}</passphrase>
+                </configuration>
                 <executions>
                     <execution>
                         <id>sign-artifacts</id>