diff --git a/Makefile b/Makefile
index a76203b..5c77d30 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,12 @@
 dist-zip: elevation.zip
 
 elevation.zip: *.py
+	-rm elevation.zip
+	find . -name "*~" -exec rm {} \;
+	find . -name "*.bak" -exec rm {} \;
 	cd ..;zip elevation/elevation.zip elevation/*.py elevation/*.png \
 	elevation/AUTHORS elevation/LICENSE elevation/metadata.txt \
 	elevation/Makefile elevation/README.md elevation/TODO
+
+clean:
+	-rm elevation.zip
diff --git a/metadata.txt b/metadata.txt
index a63579e..d727daf 100644
--- a/metadata.txt
+++ b/metadata.txt
@@ -4,13 +4,13 @@ name=Elevation
 qgisMinimumVersion=2.0
 description=Obtain and display elevation points using the Google Maps API
 category=Vector
-version=version 0.3.0
+version=version 0.4.0
 author=Steffen Macke
 email=sdteffen@gmail.com
 ; end of mandatory metadata
 
 ; start of optional metadata
-changelog=2014-01-12  Elevation 0.4.0:
+changelog=2014-01-15  Elevation 0.4.0:
 		Web browser is no longer required
 	2013-12-11  Elevation 0.3.0:
 		QGIS 2.0 updates