diff --git a/manifest.dhall b/manifest.dhall
index c42ce323016ebd0c1e43ee76a7b306b03ad2cb29..f95755d9bae4848dd323e0d5f0c47fe9f961979c 100644
--- a/manifest.dhall
+++ b/manifest.dhall
@@ -573,6 +573,7 @@ in  [ callHackage "Cabal" "3.8.1.0"
         "https://github.com/parsonsmatt/typerep-map"
         (Some "75b7cd5d45986be07420a6821d352ad2adc0b697")
         (None Text)
+    , callHackage "unagi-chan" "0.4.1.4"
     , callHackage "unicode-collation" "0.1.3.2"
     , callHackage "unicode-data" "0.4.0"
     , callHackage "unicode-transforms" "0.4.0.1"
diff --git a/overlay.nix b/overlay.nix
index faecff382cb9c6a21466f589db36f420b61ef712..7c6568ad02c646ac2462e22e2bb190100b4429c1 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -761,6 +761,8 @@ final: prev: with pkgs.haskell.lib; {
 
   typerep-map = prev.callPackage (./pkgs/typerep-map.nix) { };
 
+  unagi-chan = prev.callPackage (./pkgs/unagi-chan.nix) { };
+
   unicode-collation = prev.callPackage (./pkgs/unicode-collation.nix) { };
 
   unicode-data = prev.callPackage (./pkgs/unicode-data.nix) { };
diff --git a/pkgs/unagi-chan.nix b/pkgs/unagi-chan.nix
new file mode 100644
index 0000000000000000000000000000000000000000..b438a4dc78a8f0cf88091c8a9648f7f7d27b176a
--- /dev/null
+++ b/pkgs/unagi-chan.nix
@@ -0,0 +1,37 @@
+{ mkDerivation
+, async
+, atomic-primops
+, base
+, containers
+, criterion
+, ghc-prim
+, lib
+, primitive
+}:
+mkDerivation {
+  pname = "unagi-chan";
+  version = "0.4.1.4";
+  sha256 = "d9d6f4ab07def8e84a942bb23791830a61faf89166cb7185a3b2f97cb45128b5";
+  isLibrary = true;
+  isExecutable = false;
+  enableSeparateDataOutput = false;
+  libraryHaskellDepends = [ atomic-primops base ghc-prim primitive ];
+  testHaskellDepends = [
+    atomic-primops
+    base
+    containers
+    ghc-prim
+    primitive
+  ];
+  benchmarkHaskellDepends = [ async base criterion ];
+  enableLibraryProfiling = false;
+  enableExecutableProfiling = false;
+  doHaddock = false;
+  jailbreak = true;
+  doCheck = false;
+  doBenchmark = false;
+  hyperlinkSource = false;
+  description = "Fast concurrent queues with a Chan-like API, and more";
+  license = lib.licenses.bsd3;
+  broken = false;
+}