diff --git a/scripts/build.sh b/scripts/build.sh
index e186506..a602110 100755
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -32,6 +32,7 @@ if [ ! -z "$ANDROID_KEYSTORE_BASE64" ]; then
     fi
 
     echo "Storing keystore file to $ANDROID_KEYSTORE_NAME"
+    echo "$ANDROID_KEYSTORE_BASE64" | base64 --decode > "$ANDROID_KEYSTORE_NAME"
     set_env_var "ANDROID_KEYSTORE_NAME" $ANDROID_KEYSTORE_NAME
 fi