diff --git a/manifest.dhall b/manifest.dhall
index b92a219b97eb3e0e21189de692b561f3d9a65d05..aaff0cb13e3cffbd3f37e941c13de2cf395d8429 100644
--- a/manifest.dhall
+++ b/manifest.dhall
@@ -373,6 +373,7 @@ in  [ callHackage "Cabal" "3.8.1.0"
     , callHackage "validity" "0.12.0.1"
     , callHackage "validity-aeson" "0.2.0.5"
     , callHackage "validity-bytestring" "0.4.1.1"
+    , callHackage "validity-case-insensitive" "0.0.0.0"
     , callHackage "vault" "0.3.1.5"
     , callHackage "vector" "0.13.0.0"
     , callHackage "vector-algorithms" "0.9.0.1"
diff --git a/overlay.nix b/overlay.nix
index 9a8cc230c8b122122dfd352c4603de17284702ee..bef1f69dbb8d694a7cae2cf750dd89370ab89568 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -483,6 +483,8 @@ final: prev: with pkgs.haskell.lib; {
 
     validity-bytestring = prev.callPackage (./pkgs/validity-bytestring.nix) { };
 
+    validity-case-insensitive = prev.callPackage (./pkgs/validity-case-insensitive.nix) { };
+
     vault = prev.callPackage (./pkgs/vault.nix) { };
 
     vector = prev.callPackage (./pkgs/vector.nix) { };
diff --git a/pkgs/validity-case-insensitive.nix b/pkgs/validity-case-insensitive.nix
new file mode 100644
index 0000000000000000000000000000000000000000..c838f45cb86c2e5b3312e0db97a0cb15f08e439f
--- /dev/null
+++ b/pkgs/validity-case-insensitive.nix
@@ -0,0 +1,19 @@
+{ mkDerivation, base, case-insensitive, genvalidity-hspec, hspec
+, lib, validity
+}:
+mkDerivation {
+  pname = "validity-case-insensitive";
+  version = "0.0.0.0";
+  sha256 = "2d5896b50bcfa69f68242a05ad6d08bc8b61975ab5041749ecc5551cf7ebb71c";
+  libraryHaskellDepends = [ base case-insensitive validity ];
+  testHaskellDepends = [
+    base case-insensitive genvalidity-hspec hspec validity
+  ];
+  doHaddock = false;
+  jailbreak = true;
+  doCheck = false;
+  hyperlinkSource = false;
+  homepage = "https://github.com/NorfairKing/validity#readme";
+  description = "Validity instances for case-insensitive";
+  license = lib.licenses.mit;
+}
\ No newline at end of file