diff --git a/manifest.dhall b/manifest.dhall
index d976e49b13de73c9d810ce0b745c9d75b6cf9bd2..38dd78f1b8969acb428100b01ebbf08664271d38 100644
--- a/manifest.dhall
+++ b/manifest.dhall
@@ -674,6 +674,7 @@ in  [ callHackage "Cabal" "3.8.1.0"
     , callHackage "stm-chans" "3.0.0.6"
     , callHackage "streaming-commons" "0.2.2.4"
     , callHackage "strict" "0.4.0.1"
+    , callHackage "string-conv" "0.2.0"
     , callHackage "string-interpolate" "0.3.1.2"
     , callHackage "string-qq" "0.0.4"
     , callHackage "stringbuilder" "0.5.1"
diff --git a/overlay.nix b/overlay.nix
index d6233f0373c4829c0b2d7a97b3cccbc25332ddc8..704005224bb36b1063014f69cd4655b3b58d4dd9 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -1023,6 +1023,8 @@ self: with pkgs.haskell.lib; {
 
   strict = self.callPackage (./pkgs/strict.nix) { };
 
+  string-conv = self.callPackage (./pkgs/string-conv.nix) { };
+
   string-interpolate = self.callPackage (./pkgs/string-interpolate.nix) { };
 
   string-qq = self.callPackage (./pkgs/string-qq.nix) { };
diff --git a/pkgs/string-conv.nix b/pkgs/string-conv.nix
new file mode 100644
index 0000000000000000000000000000000000000000..76680e57a4631a272bc7e0323667cef76cf93ca1
--- /dev/null
+++ b/pkgs/string-conv.nix
@@ -0,0 +1,37 @@
+{ mkDerivation
+, base
+, bytestring
+, lib
+, quickcheck-instances
+, tasty
+, tasty-quickcheck
+, text
+}:
+mkDerivation {
+  pname = "string-conv";
+  version = "0.2.0";
+  sha256 = "39cea3010eb1c52b6dd21c4108e23b89926f0f21b872ad1f5f644328c73a9096";
+  isLibrary = true;
+  isExecutable = false;
+  enableSeparateDataOutput = false;
+  libraryHaskellDepends = [ base bytestring text ];
+  testHaskellDepends = [
+    base
+    bytestring
+    quickcheck-instances
+    tasty
+    tasty-quickcheck
+    text
+  ];
+  enableLibraryProfiling = false;
+  enableExecutableProfiling = false;
+  doHaddock = false;
+  jailbreak = true;
+  doCheck = false;
+  doBenchmark = false;
+  hyperlinkSource = false;
+  homepage = "https://github.com/Soostone/string-conv";
+  description = "Standardized conversion between string types";
+  license = lib.licenses.bsd3;
+  broken = false;
+}