diff --git a/media-viewers-repo/pom.xml b/media-viewers-repo/pom.xml
index fd117f3..50f5ea5 100644
--- a/media-viewers-repo/pom.xml
+++ b/media-viewers-repo/pom.xml
@@ -63,7 +63,13 @@
         <dependency>
             <groupId>${alfresco.groupId}</groupId>
             <artifactId>alfresco-repository</artifactId>
-            <scope>provided</scope>
+            <!-- exclude broken / irrelevant transitive dependencies -->
+            <exclusions>
+                <exclusion>
+                    <groupId>org.springframework.social</groupId>
+                    <artifactId>*</artifactId>
+                </exclusion>
+            </exclusions>
         </dependency>
         <dependency>
             <groupId>${alfresco.groupId}</groupId>
diff --git a/pom.xml b/pom.xml
index b1c47ef..46cff7b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -15,8 +15,8 @@
     </parent>
 
     <properties>
-        <alfresco.repo.version>LX102</alfresco.repo.version>
-        <alfresco.share.version>LX102</alfresco.share.version>
+        <alfresco.repo.version>5.1.e</alfresco.repo.version>
+        <alfresco.share.version>5.1.e</alfresco.share.version>
         <maven.tomcat.version>2.2</maven.tomcat.version>
         <tomcat.version>7.0.93</tomcat.version>
     </properties>