diff --git a/.ruby-version b/.ruby-version
index b0f2dcb32..818bd47ab 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.0.4
+3.0.6
diff --git a/Dockerfile b/Dockerfile
index cf311fef2..d560f1888 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -27,7 +27,7 @@ RUN ARCH= && \
 	mv node-v$NODE_VER-linux-$ARCH /opt/node
 
 # Install Ruby 3.0
-ENV RUBY_VER="3.0.4"
+ENV RUBY_VER="3.0.6"
 RUN apt-get update && \
   apt-get install -y --no-install-recommends build-essential \
     bison libyaml-dev libgdbm-dev libreadline-dev libjemalloc-dev \