diff --git a/Dockerfile b/Dockerfile
index ae7afe7..34eb159 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -23,7 +23,7 @@ RUN apk --update add git curl && \
   rm /var/cache/apk/*
 
 # install reviewdog
-ENV REVIEWDOG_VERSION=v0.20.2
+ENV REVIEWDOG_VERSION=v0.20.3
 RUN wget -O - -q https://raw.githubusercontent.com/reviewdog/reviewdog/master/install.sh | sh -s -- -b /usr/local/bin/ ${REVIEWDOG_VERSION}
 
 # install actionlint