diff --git a/manifest.dhall b/manifest.dhall
index 13fc7cb603b6f8d8fab94a9ee89d80e3dc4b0dfa..bf2b8e3e4a2241a42a5791ee58f44d136afba836 100644
--- a/manifest.dhall
+++ b/manifest.dhall
@@ -99,6 +99,7 @@ in  [ callHackage "Cabal" "3.8.1.0"
         "https://github.com/NixOS/cabal2nix"
         (None Text)
         (Some "cabal2nix")
+    , callHackage "cassava" "0.5.3.0"
     , callHackage "cereal" "0.5.8.3"
     , callHackage "cborg" "0.2.8.0"
     , callHackage "cborg-json" "0.2.5.0"
diff --git a/overlay.nix b/overlay.nix
index 533397ed3e058b503d92f7164e61e470446b26ac..cddff9bff8c656dc82ec711235aa274a57ef1b58 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -73,6 +73,8 @@ final: prev: with pkgs.haskell.lib; {
 
     cabal2nix = prev.callPackage (./pkgs/cabal2nix.nix) { };
 
+    cassava = prev.callPackage (./pkgs/cassava.nix) { };
+
     cborg = prev.callPackage (./pkgs/cborg.nix) { };
 
     cborg-json = prev.callPackage (./pkgs/cborg-json.nix) { };
diff --git a/pkgs/cassava.nix b/pkgs/cassava.nix
new file mode 100644
index 0000000000000000000000000000000000000000..3581c8633d6d1bc780c93bdd3671acaf3b23990c
--- /dev/null
+++ b/pkgs/cassava.nix
@@ -0,0 +1,28 @@
+{ mkDerivation, array, attoparsec, base, bytestring, containers
+, deepseq, hashable, HUnit, lib, Only, QuickCheck
+, quickcheck-instances, scientific, test-framework
+, test-framework-hunit, test-framework-quickcheck2, text
+, text-short, transformers, unordered-containers, vector
+}:
+mkDerivation {
+  pname = "cassava";
+  version = "0.5.3.0";
+  sha256 = "b4c8451f433ad7725cb8b9f7a7efe598ba103b16584713c91f48ae023829e9be";
+  configureFlags = [ "-f-bytestring--lt-0_10_4" ];
+  libraryHaskellDepends = [
+    array attoparsec base bytestring containers deepseq hashable Only
+    scientific text text-short transformers unordered-containers vector
+  ];
+  testHaskellDepends = [
+    attoparsec base bytestring hashable HUnit QuickCheck
+    quickcheck-instances scientific test-framework test-framework-hunit
+    test-framework-quickcheck2 text unordered-containers vector
+  ];
+  doHaddock = false;
+  jailbreak = true;
+  doCheck = false;
+  hyperlinkSource = false;
+  homepage = "https://github.com/haskell-hvr/cassava";
+  description = "A CSV parsing and encoding library";
+  license = lib.licenses.bsd3;
+}
\ No newline at end of file