diff --git a/pkgs/development/compilers/pakcs/default.nix b/pkgs/development/compilers/pakcs/default.nix
index ef53280b679..a118e7ab73b 100644
--- a/pkgs/development/compilers/pakcs/default.nix
+++ b/pkgs/development/compilers/pakcs/default.nix
@@ -4,13 +4,13 @@
 , curl, git, unzip, gnutar, coreutils, sqlite }:
 
 let
-  name = "pakcs-2.0.2";
+  name = "pakcs-2.1.1";
 
   # Don't switch to development release without a reason, because its
   # source updates without version bump. Prefer current release instead.
   src = fetchurl {
     url = "https://www.informatik.uni-kiel.de/~pakcs/download/${name}-src.tar.gz";
-    sha256 = "1hm80gvpsifbsfi13i0iiv7f2b72ymw98bbrm6a8hjsbnfw55jvg";
+    sha256 = "112v9ynqfbbm4x770mcfrai9v5bh7c3zn7jka80pv6v4y65r778c";
   };
 
   curry-frontend = (haskellPackages.override {
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 204afe75aa1..d7e4e232dc8 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4823,9 +4823,7 @@ in
 
   pagmo2 = callPackage ../development/libraries/pagmo2 { };
 
-  pakcs = callPackage ../development/compilers/pakcs {
-    haskellPackages = haskell.packages.ghc844;
-  };
+  pakcs = callPackage ../development/compilers/pakcs { };
 
   pal = callPackage ../tools/misc/pal { };