diff --git a/artifact-version.groovy b/artifact-version.groovy
index aaf7e09414c1613460c26e0c3e71c04c4ec59c26..416ac60ef5f68ba49817a1c2e6df183e2b4aa0cc 100644
--- a/artifact-version.groovy
+++ b/artifact-version.groovy
@@ -8,7 +8,7 @@ Manifest manifest = new Manifest(
   new FileInputStream(
     new File("${build.workspace}/build/tmp/jar/MANIFEST.MF")));
 
-def version = manifest.getAttributes().getValue(Attributes.Name.IMPLEMENTATION_VERSION)
+def version = manifest.getMainAttributes().getValue(Attributes.Name.IMPLEMENTATION_VERSION)
 println "Artifact version is $version"
 build.addAction(
   new ParametersAction([
diff --git a/build.gradle b/build.gradle
index 4e99f2515867b1b3c2b7b16063ffbcc739e2e53e..5541a0954cc1c9257a2c88a01e00d3b299f352cb 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,5 +1,5 @@
 group 'edu.wisc.doit.gradle'
-version '0.2.0'
+version '0.2.1'
 
 apply plugin: 'groovy'
 apply plugin: 'idea'