diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b5f2283e1..5bb0b4b02 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,7 +20,7 @@ jobs:
       - name: Install Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: "3.2"
+          ruby-version: "3.4.8"
       - name: Checkout repo
         uses: actions/checkout@v4
       - name: Checkout submodules
diff --git a/.github/workflows/release-generators.yml b/.github/workflows/release-generators.yml
index 0a64d2918..5dca414d9 100644
--- a/.github/workflows/release-generators.yml
+++ b/.github/workflows/release-generators.yml
@@ -18,7 +18,7 @@ jobs:
       - name: Install Ruby 3.4
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: "3.4"
+          ruby-version: "3.4.8"
       - name: Install tools
         run: "gem install --no-document toys"
       - name: execute
diff --git a/.github/workflows/tag-generators.yml b/.github/workflows/tag-generators.yml
index 82d9534f6..9a0e17c71 100644
--- a/.github/workflows/tag-generators.yml
+++ b/.github/workflows/tag-generators.yml
@@ -24,7 +24,7 @@ jobs:
       - name: Install Ruby 3.4
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: "3.4"
+          ruby-version: "3.4.8"
       - name: Install tools
         run: "gem install --no-document toys"
       - name: Execute
diff --git a/gapic-generator-ads/Dockerfile b/gapic-generator-ads/Dockerfile
index 45865776b..ff062b710 100644
--- a/gapic-generator-ads/Dockerfile
+++ b/gapic-generator-ads/Dockerfile
@@ -18,7 +18,7 @@
 # /workspace/gapic-generator.gem if building the base gem from main).
 # These gem files are copied into the final runtime image.
 ##
-FROM ruby:3.1-buster as builder
+FROM ruby:3.2-buster as builder
 WORKDIR /workspace
 
 # Copy code from the local directory.
@@ -38,7 +38,7 @@ RUN gem build -o gapic-generator-ads.gem gapic-generator-ads.gemspec
 # Runtime image.
 # Installs the generator executables, common protos, and an entrypoint.
 ##
-FROM ruby:3.1-buster
+FROM ruby:3.2-buster
 WORKDIR /workspace
 
 # Install common protos.
diff --git a/gapic-generator-cloud/Dockerfile b/gapic-generator-cloud/Dockerfile
index c82caa4c8..c8d510fda 100644
--- a/gapic-generator-cloud/Dockerfile
+++ b/gapic-generator-cloud/Dockerfile
@@ -15,7 +15,7 @@
 ##
 # Base image.
 ##
-FROM ruby:3.1-buster as base
+FROM ruby:3.2-buster as base
 
 # Set the correct locale so Ruby strings default to UTF-8
 ARG DEBIAN_FRONTEND=noninteractive
diff --git a/gapic-generator/Dockerfile b/gapic-generator/Dockerfile
index 9c35dfa72..bb8e87835 100644
--- a/gapic-generator/Dockerfile
+++ b/gapic-generator/Dockerfile
@@ -17,7 +17,7 @@
 # Creates /workspace/gapic-generator.gem which is later copied into the
 # final runtime image.
 ##
-FROM ruby:3.1-buster as builder
+FROM ruby:3.2-buster as builder
 WORKDIR /workspace
 
 # Copy code from the local directory.
@@ -31,7 +31,7 @@ RUN gem build -o gapic-generator.gem gapic-generator.gemspec
 # Runtime image.
 # Installs the generator executables, common protos, and an entrypoint.
 ##
-FROM ruby:3.1-buster
+FROM ruby:3.2-buster
 WORKDIR /workspace
 
 # Install common protos.