diff --git a/manifest.dhall b/manifest.dhall
index fcea876e0c5d40e34567ff9b6e0f98854c3a6689..0e01a31d4e4317414ff831061d6d89cfc5b303a4 100644
--- a/manifest.dhall
+++ b/manifest.dhall
@@ -308,6 +308,7 @@ in  [ callHackage "Cabal" "3.8.1.0"
     , callHackage "indexed-traversable" "0.1.2"
     , callHackage "indexed-traversable-instances" "0.1.1.1"
     , callHackage "infer-license" "0.2.0"
+    , callHackage "inspection-testing" "0.5"
     , callHackage "integer-logarithms" "1.0.3.1"
     , callHackage "invariant" "0.6"
     , callHackage "ipynb" "0.2"
diff --git a/overlay.nix b/overlay.nix
index f5ac135906fa059021bd52280ac055eeb6d905b7..926fb019b937e483499bc44071638c17ec8e555c 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -385,6 +385,8 @@ final: prev: with pkgs.haskell.lib; {
 
   infer-license = prev.callPackage (./pkgs/infer-license.nix) { };
 
+  inspection-testing = prev.callPackage (./pkgs/inspection-testing.nix) { };
+
   integer-logarithms = prev.callPackage (./pkgs/integer-logarithms.nix) { };
 
   invariant = prev.callPackage (./pkgs/invariant.nix) { };
diff --git a/pkgs/inspection-testing.nix b/pkgs/inspection-testing.nix
new file mode 100644
index 0000000000000000000000000000000000000000..903ae4961a95870d247d6b53ee9ae38adce9cf5a
--- /dev/null
+++ b/pkgs/inspection-testing.nix
@@ -0,0 +1,37 @@
+{ mkDerivation
+, base
+, containers
+, ghc
+, lib
+, mtl
+, template-haskell
+, transformers
+}:
+mkDerivation {
+  pname = "inspection-testing";
+  version = "0.5";
+  sha256 = "b071b714006f7980a2d71ff8bf24cf33289e334a540f4e3121fcb094a6dd5cc5";
+  isLibrary = true;
+  isExecutable = false;
+  enableSeparateDataOutput = false;
+  libraryHaskellDepends = [
+    base
+    containers
+    ghc
+    mtl
+    template-haskell
+    transformers
+  ];
+  testHaskellDepends = [ base ];
+  enableLibraryProfiling = false;
+  enableExecutableProfiling = false;
+  doHaddock = false;
+  jailbreak = true;
+  doCheck = false;
+  doBenchmark = false;
+  hyperlinkSource = false;
+  homepage = "https://github.com/nomeata/inspection-testing";
+  description = "GHC plugin to do inspection testing";
+  license = lib.licenses.mit;
+  broken = false;
+}