diff --git a/roles/build-wheels/files/wheel-build.sh b/roles/build-wheels/files/wheel-build.sh
index 7c3eb2ca8b..904535dc59 100755
--- a/roles/build-wheels/files/wheel-build.sh
+++ b/roles/build-wheels/files/wheel-build.sh
@@ -28,7 +28,8 @@ for BRANCH in master $BRANCHES; do
     # info into the logs to debug corrupt wheels.  We should see pip
     # stamping sha256 hashes into the logs for each wheel, so we can
     # see if the bad output is coming from pip, or somewhere else.
-    build_env/bin/pip install -e 'git+https://github.com/ianw/pip.git@path-and-hash#egg=pip'
+    build_env/bin/pip install --upgrade --force-reinstall \
+                      'git+https://github.com/ianw/pip.git@path-and-hash#egg=pip'
 
     # SHORT_BRANCH is just "master","newton","kilo" etc. because this
     # keeps the output log hierarchy much simpler.