diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index dd417febe..9410d6a8b 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -55,7 +55,7 @@ jobs:
       architecture: 'x64'
 
   - script: |
-      python -m pip install --upgrade pip wheel
+      python -m pip install --upgrade pip==18.1
       pip install -r requirements.txt
     displayName: 'Install dependencies'