diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index ae11028ad63..b034dc8e40c 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -14,7 +14,7 @@ jobs:
     name: Docker build (and optional push)
     runs-on: ubuntu-24.04
     env:
-      RUBYGEMS_VERSION: "3.5.19"
+      RUBYGEMS_VERSION: "3.5.20"
       RUBY_VERSION: "3.3.5"
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e4fcf7cb3b3..a8b1805742f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -26,7 +26,7 @@ jobs:
       matrix:
         rubygems:
           - name: locked
-            version: "3.5.19"
+            version: "3.5.20"
           - name: latest
             version: latest
         ruby_version: ["3.3.5"]
diff --git a/Gemfile.lock b/Gemfile.lock
index 5343fd3a400..605b758e7ac 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1220,4 +1220,4 @@ RUBY VERSION
    ruby 3.3.5p100
 
 BUNDLED WITH
-   2.5.19
+   2.5.20