diff --git a/.github/workflows/ci_docs.yml b/.github/workflows/ci_docs.yml
index 4eae68d008..0248c1cd4e 100644
--- a/.github/workflows/ci_docs.yml
+++ b/.github/workflows/ci_docs.yml
@@ -27,7 +27,7 @@ jobs:
           - target: windows
             os: windows-2019
           - target: osx
-            os: macos-10.15
+            os: macos-11
 
     name: ${{ matrix.target }}
     runs-on: ${{ matrix.os }}
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index a4f9630bb8..1bfa40a1f1 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -21,10 +21,10 @@ jobs:
         vmImage: 'ubuntu-18.04'
         CPU: i386
       OSX_amd64:
-        vmImage: 'macOS-10.15'
+        vmImage: 'macOS-11'
         CPU: amd64
       OSX_amd64_cpp:
-        vmImage: 'macOS-10.15'
+        vmImage: 'macOS-11'
         CPU: amd64
         NIM_COMPILE_TO_CPP: true
       Windows_amd64: