diff --git a/manifest.dhall b/manifest.dhall
index d30789945ebd46a60655f11089e7ba095002d453..ffc5e56a4cd8e225de047dadb4cd48febe47035e 100644
--- a/manifest.dhall
+++ b/manifest.dhall
@@ -612,6 +612,7 @@ in  [ callHackage "Cabal" "3.8.1.0"
     , callHackage "some" "1.0.4"
     , callHackage "sop-core" "0.5.0.1"
     , callHackage "souffle-haskell" "3.5.0"
+    , callHackage "special-values" "0.1.0.0"
     , callHackage "splitmix" "0.1.0.4"
     , callHackage "split" "0.2.3.3"
     , callHackage "sqlite-simple" "0.4.18.2"
diff --git a/overlay.nix b/overlay.nix
index 8921fd2a185e09a3e4abe1e0d54ea50e0951d081..e66a42898ef29d787b914346b40eaef5f91f852d 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -899,6 +899,8 @@ self: with pkgs.haskell.lib; {
 
   souffle-haskell = self.callPackage (./pkgs/souffle-haskell.nix) { };
 
+  special-values = self.callPackage (./pkgs/special-values.nix) { };
+
   split = self.callPackage (./pkgs/split.nix) { };
 
   splitmix = self.callPackage (./pkgs/splitmix.nix) { };
diff --git a/pkgs/special-values.nix b/pkgs/special-values.nix
new file mode 100644
index 0000000000000000000000000000000000000000..2b8354878e4808e3f8c668ad0c3380b244ecab11
--- /dev/null
+++ b/pkgs/special-values.nix
@@ -0,0 +1,29 @@
+{ mkDerivation, base, bytestring, ieee754, lib, scientific, text }:
+mkDerivation {
+  pname = "special-values";
+  version = "0.1.0.0";
+  sha256 = "3c14dd1304dacc8e54c2dcf95ebb3bb74b172b5409b9b45352108a4698e06dce";
+  revision = "2";
+  editedCabalFile = "1vv5gydjd65jniifl3mnch8bzvpvdahi913gsa3kv5zijwhad699";
+  isLibrary = true;
+  isExecutable = false;
+  enableSeparateDataOutput = false;
+  libraryHaskellDepends = [
+    base
+    bytestring
+    ieee754
+    scientific
+    text
+  ];
+  enableLibraryProfiling = false;
+  enableExecutableProfiling = false;
+  doHaddock = false;
+  jailbreak = true;
+  doCheck = false;
+  doBenchmark = false;
+  hyperlinkSource = false;
+  homepage = "https://github.com/minad/special-values#readme";
+  description = "Typeclass providing special values";
+  license = lib.licenses.mit;
+  broken = false;
+}