diff --git a/README.md b/README.md
index 157046bf..2a11731a 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ buildscript {
   }
 
   dependencies {
-    classpath 'com.github.ben-manes:gradle-versions-plugin:0.11'
+    classpath 'com.github.ben-manes:gradle-versions-plugin:0.11.1'
     // classpath 'org.codehaus.groovy:groovy-backports-compat23:2.3.5' // uncomment if you're using Gradle 1.x
   }
 }
diff --git a/build.gradle b/build.gradle
index eddc255a..6f7663a3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,7 +3,7 @@ apply plugin: 'nexus'
 apply plugin: 'codenarc'
 
 group = 'com.github.ben-manes'
-version = '0.12-SNAPSHOT'
+version = '0.11.1'
 
 sourceCompatibility = '1.6'
 
diff --git a/src/main/groovy/com/github/benmanes/gradle/versions/updates/Resolver.groovy b/src/main/groovy/com/github/benmanes/gradle/versions/updates/Resolver.groovy
index 91b46c09..dc1ade8d 100644
--- a/src/main/groovy/com/github/benmanes/gradle/versions/updates/Resolver.groovy
+++ b/src/main/groovy/com/github/benmanes/gradle/versions/updates/Resolver.groovy
@@ -22,6 +22,7 @@ import org.gradle.api.artifacts.ComponentSelection
 import org.gradle.api.artifacts.ComponentSelectionRules
 import org.gradle.api.artifacts.Configuration
 import org.gradle.api.artifacts.Dependency
+import org.gradle.api.artifacts.ExternalDependency
 import org.gradle.api.artifacts.LenientConfiguration
 import org.gradle.api.artifacts.ResolutionStrategy
 import org.gradle.api.artifacts.ResolvedDependency
@@ -83,10 +84,13 @@ class Resolver {
 
   /** Returns a copy of the configuration where dependencies will be resolved up to the revision. */
   private Configuration createLatestConfiguration(Configuration configuration, String revision) {
-    List<Dependency> latest = configuration.dependencies.collect { depenency ->
-      String version = (depenency.version == null) ? 'none' : '+'
-      project.dependencies.create("${depenency.group}:${depenency.name}:${version}")
+    List<Dependency> latest = configuration.dependencies.findAll { dependency ->
+      dependency instanceof ExternalDependency
+    }.collect { dependency ->
+      String version = (dependency.version == null) ? 'none' : '+'
+      project.dependencies.create("${dependency.group}:${dependency.name}:${version}")
     }
+
     Configuration copy = configuration.copyRecursive().setTransitive(false)
     copy.dependencies.clear()
     copy.dependencies.addAll(latest)