diff --git a/.gitignore b/.gitignore
index a218b46..08b3a0b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 x.pgm
 y.pgm
 output.mp4
+build/
\ No newline at end of file
diff --git a/build.sh b/build.sh
index c43e63a..460c9f6 100755
--- a/build.sh
+++ b/build.sh
@@ -1,5 +1,14 @@
 #!/bin/sh
 
+if [ $# -ne 1 ]; then
+  echo "Usage: ./build.sh <version number>"
+  exit
+fi
+
+VERSION=$1
+
+echo "Build packages with version number ${VERSION}"
+
 platforms=("windows/amd64" "windows/386" "darwin/amd64" "linux/386" "linux/amd64")
 
 for platform in "${platforms[@]}"
@@ -7,7 +16,7 @@ do
     platform_split=(${platform//\// })
     GOOS=${platform_split[0]}
     GOARCH=${platform_split[1]}
-    output_name='build/superview-'$GOOS'-'$GOARCH
+    output_name='build/superview-'$GOOS'-'$GOARCH'-'$VERSION
     if [ $GOOS = "windows" ]; then
         output_name+='.exe'
     fi