diff --git a/.github/test_runner/Dockerfile b/.github/test_runner/Dockerfile
index 92ebe503787..3f2f42a07f6 100644
--- a/.github/test_runner/Dockerfile
+++ b/.github/test_runner/Dockerfile
@@ -8,7 +8,6 @@ LABEL "com.github.actions.color"="purple"
 ENV LC_ALL C.UTF-8
 ENV LANG en_US.UTF-8
 ENV LANGUAGE en_US.UTF-8
-ENV BUNDLER_VERSION 1.17.3
 
 COPY entrypoint.sh /