diff --git a/.travis.yml b/.travis.yml
index ecbba125586..cfed1228f1d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,7 +14,8 @@ env:
     - PYTEST_ADDOPTS=-vv
 
 install:
-  - python -m pip install --upgrade --pre tox
+  - python -m pip install --upgrade pip
+  - python -m pip install --upgrade --pre --force-reinstall tox
 
 jobs:
   include:
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 42be786b57f..878a20c9982 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -94,7 +94,7 @@ jobs:
     condition: eq(variables['python.needs_vc'], True)
     displayName: 'Install VC for py27'
 
-  - script: $(python.exe) -m pip install --upgrade pip && $(python.exe) -m pip install tox
+  - script: $(python.exe) -m pip install --upgrade pip && $(python.exe) -m pip install --force-reinstall tox
     displayName: 'Install tox'
 
   - script: |