diff --git a/.github/workflows/ci_pkg-install.yml b/.github/workflows/ci_pkg-install.yml
index b4557e5ed75aa..d3102a5a3dd40 100644
--- a/.github/workflows/ci_pkg-install.yml
+++ b/.github/workflows/ci_pkg-install.yml
@@ -16,7 +16,7 @@ jobs:
       # max-parallel: 6
       matrix:
         # PyTorch 1.5 is failing on Win and bolts requires torchvision>=0.5
-        os: [ubuntu-20.04, macOS-10.15 , windows-2019]  #
+        os: [ubuntu-20.04, macOS-11.0 , windows-2019]  #
         python-version: [3.6, 3.9]
 
     steps:
@@ -60,4 +60,4 @@ jobs:
           pip install dist/*.whl
           cd ..
           python -c "import pytorch_lightning as pl ; print(pl.__version__)"
-          pip uninstall -y pytorch-lightning
\ No newline at end of file
+          pip uninstall -y pytorch-lightning
diff --git a/.github/workflows/ci_test-base.yml b/.github/workflows/ci_test-base.yml
index cf92c64f1feec..77a69955eaf31 100644
--- a/.github/workflows/ci_test-base.yml
+++ b/.github/workflows/ci_test-base.yml
@@ -15,7 +15,7 @@ jobs:
       fail-fast: false
       # max-parallel: 6
       matrix:
-        os: [ubuntu-20.04, windows-2019, macOS-10.15]
+        os: [ubuntu-20.04, windows-2019, macOS-11.0]
         python-version: [3.8]
 
     # Timeout: https://stackoverflow.com/a/59076067/4521646
diff --git a/.github/workflows/ci_test-full.yml b/.github/workflows/ci_test-full.yml
index ec9e71c5b83b2..c84881c857354 100644
--- a/.github/workflows/ci_test-full.yml
+++ b/.github/workflows/ci_test-full.yml
@@ -14,7 +14,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-18.04, windows-2019, macOS-10.15]
+        os: [ubuntu-18.04, windows-2019, macOS-11.0]
         python-version: [3.6, 3.7, 3.8, 3.9]
         requires: ['minimal', 'latest']
         exclude: