diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 6cb7e176..71c38b1f 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -46,7 +46,7 @@ jobs:
 
   - task: Cache@2
     inputs:
-      key: '"ccache-wheels-v2021.07.08" | $(Agent.OS) | "$(python.version)"'
+      key: '"ccache-wheels-v2021.07.09" | $(Agent.OS) | "$(python.version)"'
       path: $(CCACHE_DIR)
     displayName: ccache
 
@@ -146,7 +146,7 @@ jobs:
 
   - task: Cache@2
     inputs:
-      key: '"ccache-v2021.07.08" | $(Agent.OS) | "$(python.version)"'
+      key: '"ccache-v2021.07.09" | $(Agent.OS) | "$(python.version)"'
       path: $(CCACHE_DIR)
     displayName: ccache