diff --git a/.travis.yml b/.travis.yml
index c691392d..91b7ffc2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -47,7 +47,7 @@ before_script:
     - export PHPCS_DIR=/tmp/phpcs
     - export SNIFFS_DIR=/tmp/sniffs
     # Install CodeSniffer for WordPress Coding Standards checks.
-    - if [[ "$SNIFF" == "1" ]]; then git clone -b master --depth 1 https://github.com/squizlabs/PHP_CodeSniffer.git $PHPCS_DIR; fi
+    - if [[ "$SNIFF" == "1" ]]; then git clone -b 2.9 --depth 1 https://github.com/squizlabs/PHP_CodeSniffer.git $PHPCS_DIR; fi
     # Install WordPress Coding Standards.
     - if [[ "$SNIFF" == "1" ]]; then git clone -b master --depth 1 https://github.com/WordPress-Coding-Standards/WordPress-Coding-Standards.git $SNIFFS_DIR; fi
     # Install PHP Compatibility sniffs.