diff --git a/build.properties b/build.properties
index 14a1b3966..11cad1296 100644
--- a/build.properties
+++ b/build.properties
@@ -3,7 +3,7 @@ javacSource=1.6
 javacTarget=1.6
 
 # Release Configuration
-releaseVersion=1.5
+releaseVersion=1.51
 stdReleaseFile=yacy_v${releaseVersion}_${DSTAMP}_${releaseNr}.tar.gz
 sourceReleaseFile=yacy_src_v${releaseVersion}_${DSTAMP}_${releaseNr}.tar.gz
 releaseFileParentDir=yacy