diff --git a/Dockerfile-full b/Dockerfile-full
index bf6a59a..c11e32f 100644
--- a/Dockerfile-full
+++ b/Dockerfile-full
@@ -62,7 +62,7 @@ RUN mkdir -p /usr/src/app/dependency_files/slate/ \
     && wget -O ./Gemfile https://raw.githubusercontent.com/slatedocs/slate/main/Gemfile \
     && wget -O ./Gemfile.lock https://raw.githubusercontent.com/slatedocs/slate/main/Gemfile.lock \
     && apt install -y zlib1g-dev ruby-full \
-    && gem install bundler \
+    && gem install bundler -v 2.4.22 \
     && bundle install
 
 # Needed for Confluence backend