diff --git a/update.sh b/update.sh
new file mode 100644
index 0000000..d8229dc
--- /dev/null
+++ b/update.sh
@@ -0,0 +1,58 @@
+#!/bin/bash
+
+cd "$(dirname "$0")"
+BASEPATH=/app/wsusoffline/
+if [ ! -d ../temp ]; then
+   mkdir ../temp
+fi
+wget --timestamping --directory-prefix="../static" \
+    "http://download.wsusoffline.net/StaticDownloadLink-recent.txt"
+
+diff --strip-trailing-cr \
+    "../static/StaticDownloadLink-this.txt" \
+    "../static/StaticDownloadLink-recent.txt" > /dev/null
+
+if (( $? == 0 )); then
+    echo "The installed version of WSUS Offline Update is up-to-date."
+    exit 0;
+else
+    URL=$(cat ../static/StaticDownloadLink-recent.txt)
+    echo We need to update wsusoffline!
+    cd ../temp/
+    wget -q $URL
+    HASH=$(echo $URL |sed 's/\.zip/_hashes.txt/')
+    wget -q $HASH
+    FILE=$(echo $URL |sed 's/http:\/\/download.wsusoffline.net\///')
+    HASH=$(echo $FILE|sed 's/\.zip/_hashes.txt/')
+    if [[ -f $FILE ]]; then
+        SHA256=$(sha256sum ../temp/$FILE | awk '{print $1}')
+            if [[ $(grep -c "$SHA256,$FILE" $HASH) -gt 0 ]]; then
+                echo Download validated
+                cd ../temp/
+                if [[ -d wsusoffline ]]; then
+                    rm -r wsusoffline
+                fi
+                unzip -q $FILE
+                cd ..
+                cp -av temp/wsusoffline/* $BASEPATH
+                else
+                        echo Download failed
+                        if [[ -f ../temp/$FILE ]]; then
+                                rm -v ../temp/$FILE
+                        fi
+                        if [[ -f ../temp/$HASH ]]; then
+                                rm -v ../temp/$HASH
+                        fi
+                        if [[ -d ../temp/wsusoffline ]]; then
+                                rm -r ../temp/wsusoffline/
+                        fi
+            fi
+    fi
+fi
+cd $BASEPATH
+# cleanup
+if [ -d ../temp ]; then
+   rm -rf ../temp
+fi
+
+find ../ -name '*.sh' -print0 | xargs -0 chmod +x