diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index f4196ee83d20..59ef5083c6c3 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -24,7 +24,7 @@ self: super: {
     Cabal-syntax = self.Cabal-syntax_3_10_3_0;
   } // lib.optionalAttrs (lib.versionOlder self.ghc.version "9.2.5") {
     # Use process core package when possible
-    process = self.process_1_6_19_0;
+    process = self.process_1_6_20_0;
   }));
 
   # cabal-install needs most recent versions of Cabal and Cabal-syntax,
@@ -48,7 +48,7 @@ self: super: {
           # cabal-install, but we need to recompile process even if the correct
           # version is available to prevent inconsistent dependencies:
           # process depends on directory.
-          process = cself.process_1_6_19_0;
+          process = cself.process_1_6_20_0;
 
           # Prevent dependency on doctest which causes an inconsistent dependency
           # due to depending on ghc which depends on directory etc.
diff --git a/pkgs/development/haskell-modules/configuration-ghc-9.8.x.nix b/pkgs/development/haskell-modules/configuration-ghc-9.8.x.nix
index 5e1630f839d3..6881444a8876 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-9.8.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-9.8.x.nix
@@ -54,7 +54,7 @@ self: super: {
   #
   th-abstraction = doDistribute self.th-abstraction_0_7_0_0;
   ghc-lib-parser = doDistribute self.ghc-lib-parser_9_10_1_20240511;
-  ghc-lib-parser-ex = doDistribute self.ghc-lib-parser-ex_9_8_0_2;
+  ghc-lib-parser-ex = doDistribute self.ghc-lib-parser-ex_9_10_0_0;
   ghc-lib = doDistribute self.ghc-lib_9_10_1_20240511;
   megaparsec = doDistribute self.megaparsec_9_6_1;
   # TODO: remove when aeson updates or launches a revision