diff --git a/manifest.dhall b/manifest.dhall
index ef9c3b1ec49c3573660e08ad88cf41f69cd4f6d5..15917c1da41e7b606b2919129499b024ba5ba8ba 100644
--- a/manifest.dhall
+++ b/manifest.dhall
@@ -124,6 +124,7 @@ in  [ callHackage "Cabal" "3.8.1.0"
     , callHackage "bsb-http-chunked" "0.0.0.4"
     , callHackage "byteable" "0.1.1"
     , callHackage "byteorder" "1.0.4"
+    , callHackage "bytestring-builder" "0.10.8.2.0"
     , callHackage "bytes" "0.17.2"
     , callHackage "cabal-doctest" "1.0.9"
     , callHackage "cabal-install" "3.8.1.0"
diff --git a/overlay.nix b/overlay.nix
index dc9efc0a26e1f44e15b80864aa992943cf96aa6d..86a7249364c378f628a4bdf4150501c10527bf84 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -143,6 +143,8 @@ self: with pkgs.haskell.lib; {
 
   bytes = self.callPackage (./pkgs/bytes.nix) { };
 
+  bytestring-builder = self.callPackage (./pkgs/bytestring-builder.nix) { };
+
   cabal-doctest = self.callPackage (./pkgs/cabal-doctest.nix) { };
 
   cabal-install = self.callPackage (./pkgs/cabal-install.nix) { };
diff --git a/pkgs/bytestring-builder.nix b/pkgs/bytestring-builder.nix
new file mode 100644
index 0000000000000000000000000000000000000000..1d409157e3f5ff055f2a0a1832f13216b18819f5
--- /dev/null
+++ b/pkgs/bytestring-builder.nix
@@ -0,0 +1,20 @@
+{ mkDerivation, base, bytestring, deepseq, lib }:
+mkDerivation {
+  pname = "bytestring-builder";
+  version = "0.10.8.2.0";
+  sha256 = "27faef6db27c5be5a3715fd68b93725853e0e668849eaf92ce7c33cef9cb2c3f";
+  isLibrary = true;
+  isExecutable = false;
+  enableSeparateDataOutput = false;
+  libraryHaskellDepends = [ base bytestring deepseq ];
+  enableLibraryProfiling = false;
+  enableExecutableProfiling = false;
+  doHaddock = false;
+  jailbreak = true;
+  doCheck = false;
+  doBenchmark = false;
+  hyperlinkSource = false;
+  description = "The new bytestring builder, packaged outside of GHC";
+  license = lib.licenses.bsd3;
+  broken = false;
+}