diff --git a/.github/workflows/build-and-test-macos.yml b/.github/workflows/build-and-test-macos.yml
index 5ffb8bc5..fb6cc0f8 100644
--- a/.github/workflows/build-and-test-macos.yml
+++ b/.github/workflows/build-and-test-macos.yml
@@ -20,7 +20,7 @@ jobs:
   build-macOS:
     name: "Build: ${{ inputs.os }} ghc-${{ inputs.ghc_version }}"
     runs-on: ${{ inputs.os }}
-    timeout-minutes: 90
+    timeout-minutes: 30
     steps:
       - uses: actions/checkout@v4
       - name: Checkout submodules
@@ -126,7 +126,7 @@ jobs:
   test-macOS:
     name: "Test ${{ inputs.os }} ghc-${{ inputs.ghc_version }}"
     runs-on: ${{ inputs.os }}
-    timeout-minutes: 300
+    timeout-minutes: 240
     needs: build-macos
     steps:
       - uses: actions/checkout@v4
@@ -194,7 +194,7 @@ jobs:
   test-toooba-macOS:
     name: "Test Toooba ${{ inputs.os }} ghc-${{ inputs.ghc_version }}"
     runs-on: ${{ inputs.os }}
-    timeout-minutes: 120
+    timeout-minutes: 60
     needs: build-macos
     steps:
       - uses: actions/checkout@v4
@@ -272,7 +272,7 @@ jobs:
   test-contrib-macOS:
     name: "Test bsc-contrib ${{ inputs.os }} ghc-${{ inputs.ghc_version }}"
     runs-on: ${{ inputs.os }}
-    timeout-minutes: 90
+    timeout-minutes: 30
     needs: build-macos
     steps:
       - uses: actions/checkout@v4
@@ -349,7 +349,7 @@ jobs:
   test-bdw-macOS:
     name: "Test bdw ${{ inputs.os }} ghc-${{ inputs.ghc_version }}"
     runs-on: ${{ inputs.os }}
-    timeout-minutes: 90
+    timeout-minutes: 30
     needs: build-macos
     steps:
       - uses: actions/checkout@v4
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 52a82daa..0022bcf5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -42,7 +42,7 @@ jobs:
   build-and-test-macos:
     strategy:
       matrix:
-        os: [ macos-11, macos-12, macos-13, macos-14 ]
+        os: [ macos-12, macos-13, macos-14 ]
       fail-fast: false
     name: "Build/Test: ${{ matrix.os }}"
     uses: ./.github/workflows/build-and-test-macos.yml
@@ -111,11 +111,11 @@ jobs:
   build-doc-macOS:
     strategy:
       matrix:
-        os: [ macos-11, macos-12, macos-13, macos-14 ]
+        os: [ macos-12, macos-13, macos-14 ]
       fail-fast: false
     name: "Build doc: ${{ matrix.os }}"
     runs-on: ${{ matrix.os }}
-    timeout-minutes: 120
+    timeout-minutes: 60
     steps:
       - uses: actions/checkout@v4
       - name: Install dependencies