diff --git a/pom.xml b/pom.xml
index 7553913789..180a95745a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -155,6 +155,36 @@
         </executions>
       </plugin>
 
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-enforcer-plugin</artifactId>
+        <version>3.0.0-M1</version>
+        <executions>
+          <execution>
+            <id>enforce-java</id>
+            <phase>compile</phase>
+            <goals>
+              <goal>enforce</goal>
+            </goals>
+            <configuration>
+              <rules>
+                <enforceBytecodeVersion>
+                  <maxJdkVersion>1.7</maxJdkVersion>
+                </enforceBytecodeVersion>
+              </rules>
+              <fail>true</fail>
+            </configuration>
+          </execution>
+        </executions>
+        <dependencies>
+          <dependency>
+            <groupId>org.codehaus.mojo</groupId>
+            <artifactId>extra-enforcer-rules</artifactId>
+            <version>1.0-beta-7</version>
+          </dependency>
+        </dependencies>
+      </plugin>
+
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
diff --git a/scm-plugins/scm-hg-plugin/pom.xml b/scm-plugins/scm-hg-plugin/pom.xml
index cf4c42d1dc..bb339bb983 100644
--- a/scm-plugins/scm-hg-plugin/pom.xml
+++ b/scm-plugins/scm-hg-plugin/pom.xml
@@ -28,7 +28,7 @@
     <dependency>
       <groupId>com.aragost.javahg</groupId>
       <artifactId>javahg</artifactId>
-      <version>0.13</version>
+      <version>0.13-java7</version>
       <exclusions>
         <exclusion>
           <groupId>com.google.guava</groupId>