diff --git a/hydra-cardano-api/hydra-cardano-api.cabal b/hydra-cardano-api/hydra-cardano-api.cabal
index 8847c16fed9..debe20f831b 100644
--- a/hydra-cardano-api/hydra-cardano-api.cabal
+++ b/hydra-cardano-api/hydra-cardano-api.cabal
@@ -81,7 +81,7 @@ library
     , base                    >=4.16
     , base16-bytestring
     , bytestring
-    , cardano-api             ^>=10.3
+    , cardano-api             ^>=10.4
     , cardano-binary
     , cardano-crypto-class
     , cardano-ledger-allegra