diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 74d78395..4b5aabd3 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -10,7 +10,7 @@ jobs:
         python ./bin/run_tests.py
 
 - job: macos_35
-  pool: {vmImage: 'macOS-10.13'}
+  pool: {vmImage: 'macOS-10.15'}
   steps:
     - task: UsePythonVersion@0
       inputs:
@@ -20,7 +20,7 @@ jobs:
         python ./bin/run_tests.py
 
 - job: macos_38
-  pool: {vmImage: 'macOS-10.13'}
+  pool: {vmImage: 'macOS-10.15'}
   steps:
     - task: UsePythonVersion@0
       inputs:
diff --git a/examples/azure-pipelines-minimal.yml b/examples/azure-pipelines-minimal.yml
index eac34c0a..2e9a4311 100644
--- a/examples/azure-pipelines-minimal.yml
+++ b/examples/azure-pipelines-minimal.yml
@@ -11,7 +11,7 @@ jobs:
       inputs: {pathtoPublish: 'wheelhouse'}
 
 - job: macos
-  pool: {vmImage: 'macOS-10.13'}
+  pool: {vmImage: 'macOS-10.15'}
   steps:
     - task: UsePythonVersion@0
     - bash: |