diff --git a/.ruby-version b/.ruby-version
index fcdb2e10..1454f6ed 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-4.0.0
+4.0.1
diff --git a/Dockerfile b/Dockerfile
index 57a5ad08..646ad135 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:4.0.0 AS base
+FROM ruby:4.0.1 AS base
 
 RUN bundle config set frozen 'true' && \
     bundle config set path '/vendor/bundle'
diff --git a/Gemfile.lock b/Gemfile.lock
index bbdcb46c..13ad7690 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -48,8 +48,8 @@ GEM
     jekyll-watch (2.2.1)
       listen (~> 3.0)
     json (2.18.0)
-    kramdown (2.5.1)
-      rexml (>= 3.3.9)
+    kramdown (2.5.2)
+      rexml (>= 3.4.4)
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
     liquid (4.0.4)
@@ -69,7 +69,7 @@ GEM
     rexml (3.4.4)
     rouge (4.7.0)
     safe_yaml (1.0.5)
-    sass-embedded (1.97.2)
+    sass-embedded (1.97.3)
       google-protobuf (~> 4.31)
       rake (>= 13)
     terminal-table (3.0.2)