diff --git a/utils/haddock/haddock-api/src/Haddock/InterfaceFile.hs b/utils/haddock/haddock-api/src/Haddock/InterfaceFile.hs
index 86de35c911c85b62fbc0013df8c05cb166fca73a..d09e0f74a394edd7b13f0b54ab7c5b62fb75bccf 100644
--- a/utils/haddock/haddock-api/src/Haddock/InterfaceFile.hs
+++ b/utils/haddock/haddock-api/src/Haddock/InterfaceFile.hs
@@ -139,8 +139,8 @@ binaryInterfaceMagic = 0xD0Cface
 -- (2) set `binaryInterfaceVersionCompatibility` to [binaryInterfaceVersion]
 --
 binaryInterfaceVersion :: Word16
-#if MIN_VERSION_ghc(9,9,0) && !MIN_VERSION_ghc(9,12,0)
-binaryInterfaceVersion = 44
+#if MIN_VERSION_ghc(9,12,0) && !MIN_VERSION_ghc(9,13,0)
+binaryInterfaceVersion = 45
 
 binaryInterfaceVersionCompatibility :: [Word16]
 binaryInterfaceVersionCompatibility = [binaryInterfaceVersion]