diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0ea25657..17fbd740 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -44,7 +44,7 @@ jobs:
         ./linux-container-ci.sh ${{ env.BUILDER_VERSION }} aws-crt-${{ matrix.image }} build -p ${{ env.PACKAGE_NAME }} --cmake-extra=-DASSERT_LOCK_HELD=ON
 
   linux-compiler-compat:
-    runs-on: ubuntu-20.04 # latest
+    runs-on: ubuntu-24.04 # latest
     strategy:
       matrix:
         compiler:
@@ -54,17 +54,24 @@ jobs:
           - clang-9
           - clang-10
           - clang-11
+          - clang-15
+          - clang-17
           - gcc-4.8
           - gcc-5
           - gcc-6
           - gcc-7
           - gcc-8
+          - gcc-11
     steps:
-      # We can't use the `uses: docker://image` version yet, GitHub lacks authentication for actions -> packages
-      - name: Build ${{ env.PACKAGE_NAME }}
-        run: |
-          aws s3 cp s3://aws-crt-test-stuff/ci/${{ env.BUILDER_VERSION }}/linux-container-ci.sh ./linux-container-ci.sh && chmod a+x ./linux-container-ci.sh
-          ./linux-container-ci.sh ${{ env.BUILDER_VERSION }} aws-crt-${{ env.LINUX_BASE_IMAGE }} build -p ${{ env.PACKAGE_NAME }} --compiler=${{ matrix.compiler }} --cmake-extra=-DASSERT_LOCK_HELD=ON
+    - uses: aws-actions/configure-aws-credentials@v4
+      with:
+        role-to-assume: ${{ env.CRT_CI_ROLE }}
+        aws-region: ${{ env.AWS_DEFAULT_REGION }}
+    # We can't use the `uses: docker://image` version yet, GitHub lacks authentication for actions -> packages
+    - name: Build ${{ env.PACKAGE_NAME }}
+      run: |
+        aws s3 cp s3://aws-crt-test-stuff/ci/${{ env.BUILDER_VERSION }}/linux-container-ci.sh ./linux-container-ci.sh && chmod a+x ./linux-container-ci.sh
+        ./linux-container-ci.sh ${{ env.BUILDER_VERSION }} aws-crt-${{ env.LINUX_BASE_IMAGE }} build -p ${{ env.PACKAGE_NAME }} --compiler=${{ matrix.compiler }} --cmake-extra=-DASSERT_LOCK_HELD=ON
 
   clang-sanitizers:
     runs-on: ubuntu-24.04 # latest