diff --git a/.github/workflows/haskell.yml b/.github/workflows/haskell.yml
index cab9b67d01..fc07afcc68 100644
--- a/.github/workflows/haskell.yml
+++ b/.github/workflows/haskell.yml
@@ -17,7 +17,7 @@ jobs:
 
     env:
       # Modify this value to "invalidate" the cabal cache.
-      CABAL_CACHE_VERSION: "2024-02-27-golden"
+      CABAL_CACHE_VERSION: "2024-02-28-golden"
 
     concurrency:
       group: >
diff --git a/cabal.project b/cabal.project
index 5053f33417..e7e587261e 100644
--- a/cabal.project
+++ b/cabal.project
@@ -30,37 +30,37 @@ package cardano-api-gen
 source-repository-package
   type: git
   location: https://github.com/IntersectMBO/cardano-ledger.git
-  tag: 1eddd83196bc42e57acaf895f548e07db76e984a
+  tag: b9fc6d5b4837e7923e2d8bdefb66deae6522404a
   subdir: eras/alonzo/impl
-  --sha256: sha256-oUUDwm+WdwY7n1xgGhP0T+MAiNfQ/CIh4yVwKf12yqk=
+  --sha256: sha256-dp7rZ4n0NCoWO2UoGEwVbtjS6R4FusKjBYyhJR1qEn4=
 
 source-repository-package
   type: git
   location: https://github.com/IntersectMBO/cardano-ledger.git
-  tag: 1eddd83196bc42e57acaf895f548e07db76e984a
+  tag: b9fc6d5b4837e7923e2d8bdefb66deae6522404a
   subdir: eras/babbage/impl
-  --sha256: sha256-oUUDwm+WdwY7n1xgGhP0T+MAiNfQ/CIh4yVwKf12yqk=
+  --sha256: sha256-dp7rZ4n0NCoWO2UoGEwVbtjS6R4FusKjBYyhJR1qEn4=
 
 source-repository-package
   type: git
   location: https://github.com/IntersectMBO/cardano-ledger.git
-  tag: 1eddd83196bc42e57acaf895f548e07db76e984a
+  tag: b9fc6d5b4837e7923e2d8bdefb66deae6522404a
   subdir: eras/shelley/impl
-  --sha256: sha256-oUUDwm+WdwY7n1xgGhP0T+MAiNfQ/CIh4yVwKf12yqk=
+  --sha256: sha256-dp7rZ4n0NCoWO2UoGEwVbtjS6R4FusKjBYyhJR1qEn4=
 
 source-repository-package
   type: git
   location: https://github.com/IntersectMBO/cardano-ledger.git
-  tag: 1eddd83196bc42e57acaf895f548e07db76e984a
+  tag: b9fc6d5b4837e7923e2d8bdefb66deae6522404a
   subdir: eras/conway/impl
-  --sha256: sha256-oUUDwm+WdwY7n1xgGhP0T+MAiNfQ/CIh4yVwKf12yqk=
+  --sha256: sha256-dp7rZ4n0NCoWO2UoGEwVbtjS6R4FusKjBYyhJR1qEn4=
 
 source-repository-package
   type: git
   location: https://github.com/IntersectMBO/cardano-ledger.git
-  tag: 1eddd83196bc42e57acaf895f548e07db76e984a
+  tag: b9fc6d5b4837e7923e2d8bdefb66deae6522404a
   subdir: libs/cardano-ledger-core
-  --sha256: sha256-oUUDwm+WdwY7n1xgGhP0T+MAiNfQ/CIh4yVwKf12yqk=
+  --sha256: sha256-dp7rZ4n0NCoWO2UoGEwVbtjS6R4FusKjBYyhJR1qEn4=
 
 
 package cryptonite