diff --git a/cabal-ghc901.project b/cabal-ghc901.project
index 325b3763b7c..d8db6c2e9af 100644
--- a/cabal-ghc901.project
+++ b/cabal-ghc901.project
@@ -61,7 +61,7 @@ source-repository-package
 
 write-ghc-environment-files: never
 
-index-state: 2021-09-16T07:00:23Z
+index-state: 2021-09-20T12:00:00Z
 
 constraints:
     -- These plugins don't work on GHC9 yet
diff --git a/cabal.project b/cabal.project
index 50d1ffbbd14..3574ede7a79 100644
--- a/cabal.project
+++ b/cabal.project
@@ -38,7 +38,7 @@ package *
 
 write-ghc-environment-files: never
 
-index-state: 2021-09-16T07:00:23Z
+index-state: 2021-09-20T12:00:00Z
 
 constraints:
     hyphenation +embed