diff --git a/.github/actions/notices_generation/action.yml b/.github/actions/notices_generation/action.yml
index 1b10bcde9e..a5d4634192 100644
--- a/.github/actions/notices_generation/action.yml
+++ b/.github/actions/notices_generation/action.yml
@@ -25,7 +25,7 @@ outputs:
 runs:
   using: 'composite'
   steps:
-  - uses: ruby/setup-ruby@354a1ad156761f5ee2b7b13fa8e09943a5e8d252 # v1
+  - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
     with:
       ruby-version: "3.4"
   - name: Generate a NOTICES file
diff --git a/.github/workflows/_build.yml b/.github/workflows/_build.yml
index 768824c16a..e41e282708 100644
--- a/.github/workflows/_build.yml
+++ b/.github/workflows/_build.yml
@@ -122,7 +122,7 @@ jobs:
         '
       env:
         CUSTOM_ENV_VARS: ${{ inputs.env_vars }}
-    - uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+    - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
       if: inputs.method != 'spm' && inputs.method != 'spmbuildonly' && inputs.method != 'cmake'
     - name: Setup Bundler
       if: inputs.method != 'spm' && inputs.method != 'spmbuildonly' && inputs.method != 'cmake'
diff --git a/.github/workflows/_catalyst.yml b/.github/workflows/_catalyst.yml
index 816491d799..02659d546f 100644
--- a/.github/workflows/_catalyst.yml
+++ b/.github/workflows/_catalyst.yml
@@ -32,7 +32,7 @@ jobs:
     - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
       with:
         persist-credentials: false
-    - uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+    - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
     - name: Setup Bundler
       run: scripts/setup_bundler.sh
     - name: Xcode
diff --git a/.github/workflows/_cocoapods.cron.yml b/.github/workflows/_cocoapods.cron.yml
index 08a69bc906..4cef0e412a 100644
--- a/.github/workflows/_cocoapods.cron.yml
+++ b/.github/workflows/_cocoapods.cron.yml
@@ -66,7 +66,7 @@ jobs:
     - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
       with:
         persist-credentials: false
-    - uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+    - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
     - name: Setup Bundler
       uses: nick-fields/retry@ad984534de44a9489a53aefd81eb77f87c70dc60 # v4.0.0
       with:
diff --git a/.github/workflows/_cocoapods.yml b/.github/workflows/_cocoapods.yml
index 138a60d84b..ea569d9cb5 100644
--- a/.github/workflows/_cocoapods.yml
+++ b/.github/workflows/_cocoapods.yml
@@ -140,7 +140,7 @@ jobs:
     - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
       with:
         persist-credentials: false
-    - uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+    - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
     - name: Setup Bundler
       uses: nick-fields/retry@ad984534de44a9489a53aefd81eb77f87c70dc60 # v4.0.0
       with:
diff --git a/.github/workflows/_quickstart.framework.yml b/.github/workflows/_quickstart.framework.yml
index 3059cc7d9b..96a7255c1b 100644
--- a/.github/workflows/_quickstart.framework.yml
+++ b/.github/workflows/_quickstart.framework.yml
@@ -70,7 +70,7 @@ jobs:
         name: ${{ inputs.artifact_name }}
         run-id: ${{ inputs.zip_run_id }}
         github-token: ${{ secrets.github_token }}
-    - uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+    - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
     - name: Xcode
       env:
         XCODE_VERSION: ${{ inputs.xcode }}
diff --git a/.github/workflows/_quickstart.yml b/.github/workflows/_quickstart.yml
index 1182483b0c..2eabacd027 100644
--- a/.github/workflows/_quickstart.yml
+++ b/.github/workflows/_quickstart.yml
@@ -74,7 +74,7 @@ jobs:
     - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
       with:
         persist-credentials: false
-    - uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+    - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
     - name: Prereqs
       run: gem install xcpretty
     - name: Xcode
diff --git a/.github/workflows/infra.archiving.yml b/.github/workflows/infra.archiving.yml
index e8e0d139d7..03d205e11a 100644
--- a/.github/workflows/infra.archiving.yml
+++ b/.github/workflows/infra.archiving.yml
@@ -37,7 +37,7 @@ jobs:
       uses: ./.github/actions/setup_simulator
       with:
         platform: iOS
-    - uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+    - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
     - name: Setup Bundler
       run: scripts/setup_bundler.sh
     - name: Setup project and archive
@@ -70,7 +70,7 @@ jobs:
       uses: ./.github/actions/setup_simulator
       with:
         platform: ${{ matrix.target }}
-    - uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+    - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
     - name: Setup Bundler
       run: scripts/setup_bundler.sh
     - name: Setup project and archive
diff --git a/.github/workflows/infra.danger.yml b/.github/workflows/infra.danger.yml
index 60bcb73630..9ad728a7f5 100644
--- a/.github/workflows/infra.danger.yml
+++ b/.github/workflows/infra.danger.yml
@@ -31,7 +31,7 @@ jobs:
         owner: firebase
         repositories: firebase-ios-sdk
 
-    - uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+    - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
     - name: Setup Bundler
       run: scripts/setup_bundler.sh
 
diff --git a/.github/workflows/infra.ftl.nightly.yml b/.github/workflows/infra.ftl.nightly.yml
index 4b822e8466..d3e42d5501 100644
--- a/.github/workflows/infra.ftl.nightly.yml
+++ b/.github/workflows/infra.ftl.nightly.yml
@@ -20,7 +20,7 @@ jobs:
   ftl_test:
     # TODO(ncooke3): Enable FTL nightly testing. See #16031.
     if: github.repository == 'Firebase/firebase-ios-sdk'
-    runs-on: macos-15
+    runs-on: macos-26
     name: ${{ matrix.product }}
     env:
       plist_secret: ${{ secrets.GHASecretsGPGPassphrase1 }}
@@ -79,7 +79,7 @@ jobs:
     - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
       with:
         persist-credentials: false
-    - uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+    - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
     - name: Setup Bundler
       run: scripts/setup_bundler.sh
     - name: Install xcpretty
@@ -88,7 +88,7 @@ jobs:
       with:
         python-version: '3.11'
     - name: Xcode
-      run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
+      run: sudo xcode-select -s /Applications/Xcode_26.4.app/Contents/Developer
     - name: Setup quickstart
       run: ${{ matrix.setup_command }} # zizmor: ignore[template-injection]
     - name: Install Secret GoogleService-Info.plist
diff --git a/.github/workflows/infra.samples.watchos.yml b/.github/workflows/infra.samples.watchos.yml
index a76c4c2dbd..f6f7a46b9c 100644
--- a/.github/workflows/infra.samples.watchos.yml
+++ b/.github/workflows/infra.samples.watchos.yml
@@ -37,7 +37,7 @@ jobs:
     - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
       with:
         persist-credentials: false
-    - uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+    - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
     - name: Setup Bundler
       run: scripts/setup_bundler.sh
     - name: Prereqs
diff --git a/.github/workflows/release.spm.prerelease.yml b/.github/workflows/release.spm.prerelease.yml
index 7e57186926..a9ee8bdc4e 100644
--- a/.github/workflows/release.spm.prerelease.yml
+++ b/.github/workflows/release.spm.prerelease.yml
@@ -35,7 +35,7 @@ jobs:
     # runs-on: macos-12
     # steps:
     # - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
-    # - uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+    # - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
     # - name: Xcode
     #   run: sudo xcode-select -s /Applications/Xcode_26.2.app/Contents/Developer
     # - name: Setup testing repo and quickstart
@@ -100,7 +100,7 @@ jobs:
     - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
       with:
         persist-credentials: false
-    - uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+    - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
     - name: Prereqs
       run: gem install xcpretty
     - name: Xcode
diff --git a/.github/workflows/release.spm.yml b/.github/workflows/release.spm.yml
index 5facb9b795..01c0059704 100644
--- a/.github/workflows/release.spm.yml
+++ b/.github/workflows/release.spm.yml
@@ -33,7 +33,7 @@ jobs:
   #   runs-on: macos-12
   #   steps:
   #   - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
-  #   - uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+  #   - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
   #   - name: Setup testing repo and quickstart
   #     run: BOT_TOKEN="${botaccess}" scripts/setup_quickstart.sh functions nightly_release_testing
   #   - name: install secret googleservice-info.plist
@@ -98,7 +98,7 @@ jobs:
         persist-credentials: false
     - name: Set Xcode version
       run: sudo xcode-select -s /Applications/Xcode_26.2.app
-    - uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+    - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
     - name: Prereqs
       run: gem install xcpretty
     - name: Setup testing repo and quickstart
diff --git a/.github/workflows/release.zip.yml b/.github/workflows/release.zip.yml
index 0184ccd7ea..b69fc46123 100644
--- a/.github/workflows/release.zip.yml
+++ b/.github/workflows/release.zip.yml
@@ -91,7 +91,7 @@ jobs:
         persist-credentials: false
     - name: Xcode
       run: sudo xcode-select -s /Applications/${{ env.MIN_XCODE }}.app/Contents/Developer
-    - uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+    - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
     - name: Setup Bundler
       run: ./scripts/setup_bundler.sh
     - name: ZipBuildingTest
@@ -142,7 +142,7 @@ jobs:
         persist-credentials: false
     - name: Xcode
       run: sudo xcode-select -s /Applications/${{ env.MIN_XCODE }}.app/Contents/Developer
-    - uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+    - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
     - name: Setup Bundler
       run: ./scripts/setup_bundler.sh
     - name: ZipBuildingTest
@@ -205,7 +205,7 @@ jobs:
           name: Firebase-actions-dir
           run-id: ${{ needs.packaging_done.outputs.run_id }}
           github-token: ${{ secrets.GITHUB_TOKEN }}
-      - uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+      - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
       - name: Setup Bundler
         run: ./scripts/setup_bundler.sh
       - name: Install xcpretty
diff --git a/.github/workflows/sdk.analytics.yml b/.github/workflows/sdk.analytics.yml
index e3d421cbbc..88c1da9b10 100644
--- a/.github/workflows/sdk.analytics.yml
+++ b/.github/workflows/sdk.analytics.yml
@@ -40,7 +40,7 @@ jobs:
     - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
       with:
         persist-credentials: false
-    - uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+    - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
     - name: Setup Bundler
       run: scripts/setup_bundler.sh
     - name: Xcode
diff --git a/.github/workflows/sdk.firestore.yml b/.github/workflows/sdk.firestore.yml
index fc15e5ca98..d23fccc225 100644
--- a/.github/workflows/sdk.firestore.yml
+++ b/.github/workflows/sdk.firestore.yml
@@ -305,7 +305,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+      - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
 
       - name: Select Xcode
         run: sudo xcode-select -s /Applications/Xcode_26.4.app/Contents/Developer
@@ -387,7 +387,7 @@ jobs:
           key: ${{ runner.os }}-xctest-products-${{ matrix.target }}-${{ github.sha }}
 
       - if: steps.cache-products.outputs.cache-hit != 'true'
-        uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+        uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
 
       - name: Cache Pods
         if: steps.cache-products.outputs.cache-hit != 'true'
@@ -468,7 +468,7 @@ jobs:
           key: ${{ runner.os }}-xctest-products-${{ matrix.target }}-${{ github.sha }}
 
       - if: steps.cache-products.outputs.cache-hit != 'true'
-        uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+        uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
 
       - name: Cache Pods
         if: steps.cache-products.outputs.cache-hit != 'true'
@@ -565,7 +565,7 @@ jobs:
         key: ${{ runner.os }}-xctest-products-${{ matrix.target }}-${{ github.sha }}
 
     - if: steps.cache-products.outputs.cache-hit != 'true'
-      uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+      uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
 
     - name: Cache Pods
       if: steps.cache-products.outputs.cache-hit != 'true'
@@ -647,7 +647,7 @@ jobs:
       with:
         persist-credentials: false
 
-    - uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+    - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f # v1.335.0
     - name: Setup Bundler
       run: ./scripts/setup_bundler.sh
     - name: Xcode
diff --git a/.ruby-version b/.ruby-version
index 47b322c971..0ce07b72f8 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.4.1
+3.4.11
diff --git a/scripts/create_spec_repo/README.md b/scripts/create_spec_repo/README.md
index 07654b40b0..7e371631a8 100644
--- a/scripts/create_spec_repo/README.md
+++ b/scripts/create_spec_repo/README.md
@@ -36,9 +36,9 @@ job in presubmit.
     runs-on: macOS-latest
     steps:
     - uses: actions/checkout@v3
-    - uses: ruby/setup-ruby@359bebbc29cbe6c87da6bc9ea3bc930432750108
+    - uses: ruby/setup-ruby@7f797815d8adceb1c412e7abefdd1ab4abc47a5f
       with:
-        ruby-version: '3.4.1'
+        ruby-version: '3.4.11'
     - name: Setup Bundler
       run: scripts/setup_bundler.sh
     - name: Build and test