diff --git a/utils/docker/pull-or-rebuild-image.sh b/utils/docker/pull-or-rebuild-image.sh
index dfcee4f91ed..a34f54c6ce0 100755
--- a/utils/docker/pull-or-rebuild-image.sh
+++ b/utils/docker/pull-or-rebuild-image.sh
@@ -85,7 +85,11 @@ fi
 
 # Find all the commits for the current build
 if [[ -n "$TRAVIS_COMMIT_RANGE" ]]; then
-	commits=$(git rev-list $TRAVIS_COMMIT_RANGE)
+	# $TRAVIS_COMMIT_RANGE contains "..." instead of ".."
+	# https://github.com/travis-ci/travis-ci/issues/4596
+	PR_COMMIT_RANGE="${TRAVIS_COMMIT_RANGE/.../..}"
+
+	commits=$(git rev-list $PR_COMMIT_RANGE)
 else
 	commits=$TRAVIS_COMMIT
 fi