diff --git a/Dockerfile b/Dockerfile
index 3f0c5d0..cfbd8f7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,7 @@ WORKDIR /opt/blog
 COPY . /opt/blog/
 
 RUN git submodule update --init --recursive && \
-    git -C themes/blowfish/ checkout v2.63.0
+    git -C themes/blowfish/ checkout v2.64.0
 RUN hugo
 
 # Publish Stage