diff --git a/manifest.dhall b/manifest.dhall
index 08ca43cb269144cbd8664fa6388db0f147727f0c..2659f039f9d9339cc0f75146cc8e284906697b2a 100644
--- a/manifest.dhall
+++ b/manifest.dhall
@@ -551,6 +551,7 @@ in  [ callHackage "Cabal" "3.8.1.0"
         (Some "bd944ca000c1ca69602d4723e3859af431b9d0c4")
         (Some "polysemy-plugin")
     , callHackage "polysemy-several" "0.1.1.0"
+    , callHackage "polysemy-test" "0.6.0.0"
     , callHackage "polysemy-time" "0.5.1.0"
     , callHackage "polysemy-vinyl" "0.1.5.0"
     , callHackage "polysemy-zoo" "0.8.0.0"
diff --git a/overlay.nix b/overlay.nix
index 297cbb3b028d26d190e7772a4579111080963c2d..cf070dd496e5023cfa2390d0c3871d5ddda2e7cd 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -829,6 +829,8 @@ self: with pkgs.haskell.lib; {
 
   polysemy-several = self.callPackage (./pkgs/polysemy-several.nix) { };
 
+  polysemy-test = self.callPackage (./pkgs/polysemy-test.nix) { };
+
   polysemy-time = self.callPackage (./pkgs/polysemy-time.nix) { };
 
   polysemy-vinyl = self.callPackage (./pkgs/polysemy-vinyl.nix) { };
diff --git a/pkgs/polysemy-test.nix b/pkgs/polysemy-test.nix
new file mode 100644
index 0000000000000000000000000000000000000000..94edbc234a04bbf8b56860e5ec0f1e9eacd2b186
--- /dev/null
+++ b/pkgs/polysemy-test.nix
@@ -0,0 +1,50 @@
+{ mkDerivation
+, base
+, hedgehog
+, incipit-core
+, lib
+, path
+, path-io
+, polysemy
+, tasty
+, tasty-hedgehog
+, transformers
+}:
+mkDerivation {
+  pname = "polysemy-test";
+  version = "0.6.0.0";
+  sha256 = "f0f6a7c812875c9a2263c7a1a093fdc8cb653f4c5384843231cbdd4e25797d24";
+  isLibrary = true;
+  isExecutable = false;
+  enableSeparateDataOutput = true;
+  libraryHaskellDepends = [
+    base
+    hedgehog
+    incipit-core
+    path
+    path-io
+    polysemy
+    tasty
+    tasty-hedgehog
+    transformers
+  ];
+  testHaskellDepends = [
+    base
+    hedgehog
+    incipit-core
+    path
+    polysemy
+    tasty
+  ];
+  enableLibraryProfiling = false;
+  enableExecutableProfiling = false;
+  doHaddock = false;
+  jailbreak = true;
+  doCheck = false;
+  doBenchmark = false;
+  hyperlinkSource = false;
+  homepage = "https://github.com/tek/polysemy-test#readme";
+  description = "Polysemy Effects for Testing";
+  license = "BSD-2-Clause-Patent";
+  broken = false;
+}