Merge pull request exercism#156 from mienaikage/java-installation-instructions

jtigger · web-flow · commit 91a65d79d032 · 2016-11-10T19:24:23.000-08:00
diff --git a/docs/INSTALLATION.md b/docs/INSTALLATION.md
@@ -108,6 +108,8 @@ If you are using Debian or its derivatives (like Ubuntu or Linux Mint), use APT:
 -  Install Gradle:
 
    ```sh
+   $ sudo add-apt-repository ppa:cwchien/gradle
+   $ sudo apt-get update
    $ sudo apt-get install gradle
    ```
 
