diff --git a/script/run-tests.fish b/script/run-tests.fish
index 39eab3f..bb4ad23 100755
--- a/script/run-tests.fish
+++ b/script/run-tests.fish
@@ -1,4 +1,10 @@
 #!/usr/bin/env fish
+
+# When running on CI, run tests from the correct branch
+if set -q TRAVIS_BRANCH
+  command git checkout $TRAVIS_BRANCH
+end
+
 set -l result 0
 for test in (find * -type f -print | grep "spec.fish")
   fish $test $argv