diff --git a/manifest.dhall b/manifest.dhall
index ccad977786a31c6aa00ea5f3f046e4ab60778d2d..c67f736875201f9ad4c11ad8078972aa0cc6f3a9 100644
--- a/manifest.dhall
+++ b/manifest.dhall
@@ -618,6 +618,7 @@ in  [ callHackage "Cabal" "3.8.1.0"
     , callHackage "vault" "0.3.1.5"
     , callHackage "vector" "0.13.0.0"
     , callHackage "vector-algorithms" "0.9.0.1"
+    , callHackage "vector-th-unbox" "0.2.2"
     , callHackage "vec" "0.4.1"
     , callHackage "vinyl" "0.14.3"
     , callHackage "void" "0.7.3"
diff --git a/overlay.nix b/overlay.nix
index 3442cf114ef089b64d01b7d778bc651a849fb7d9..1d372ded37d025a256d3601eb8d1375fe1aae7ae 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -853,6 +853,8 @@ final: prev: with pkgs.haskell.lib; {
 
   vector-algorithms = prev.callPackage (./pkgs/vector-algorithms.nix) { };
 
+  vector-th-unbox = prev.callPackage (./pkgs/vector-th-unbox.nix) { };
+
   vinyl = prev.callPackage (./pkgs/vinyl.nix) { };
 
   void = prev.callPackage (./pkgs/void.nix) { };
diff --git a/pkgs/vector-th-unbox.nix b/pkgs/vector-th-unbox.nix
new file mode 100644
index 0000000000000000000000000000000000000000..2b10fa333e83769ccd6695db750ee4b282c21e9c
--- /dev/null
+++ b/pkgs/vector-th-unbox.nix
@@ -0,0 +1,30 @@
+{ mkDerivation
+, base
+, data-default
+, lib
+, template-haskell
+, vector
+}:
+mkDerivation {
+  pname = "vector-th-unbox";
+  version = "0.2.2";
+  sha256 = "8aa4ca464e842706e5b5234b8242d1aafec9ee755659b0e3ff44ecde13a80149";
+  revision = "3";
+  editedCabalFile = "0ki133sixq8pkfys36nl25jzdvnw40qq2bnskdmk2zyjhckdjcna";
+  isLibrary = true;
+  isExecutable = false;
+  enableSeparateDataOutput = false;
+  libraryHaskellDepends = [ base template-haskell vector ];
+  testHaskellDepends = [ base data-default vector ];
+  enableLibraryProfiling = false;
+  enableExecutableProfiling = false;
+  doHaddock = false;
+  jailbreak = true;
+  doCheck = false;
+  doBenchmark = false;
+  hyperlinkSource = false;
+  homepage = "https://github.com/tsurucapital/vector-th-unbox";
+  description = "Deriver for Data.Vector.Unboxed using Template Haskell";
+  license = lib.licenses.bsd3;
+  broken = false;
+}