diff --git a/manifest.dhall b/manifest.dhall
index b867a66ef1c0212e984f7106c724d5bd09d03431..44767588bc3232bc19983629af736e1506c8a998 100644
--- a/manifest.dhall
+++ b/manifest.dhall
@@ -360,6 +360,7 @@ in  [ callHackage "Cabal" "3.8.1.0"
     , callHackage "http-media" "0.8.0.0"
     , callHackage "http-types" "0.12.3"
     , callHackage "http2" "3.0.3"
+    , callHackage "ieee754" "0.8.0"
     , callHackage "incipit-base" "0.3.0.0"
     , callHackage "incipit-core" "0.3.0.0"
     , callHackage "indexed-traversable-instances" "0.1.1.1"
diff --git a/overlay.nix b/overlay.nix
index 23e676613551226344169c04a8f545160261b7f9..540f8b078c54ed6c987137b4f67ac4d7f7e2f8f3 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -509,6 +509,8 @@ self: with pkgs.haskell.lib; {
 
   httpd-shed = self.callPackage (./pkgs/httpd-shed.nix) { };
 
+  ieee754 = self.callPackage (./pkgs/ieee754.nix) { };
+
   incipit-base = self.callPackage (./pkgs/incipit-base.nix) { };
 
   incipit-core = self.callPackage (./pkgs/incipit-core.nix) { };
diff --git a/pkgs/ieee754.nix b/pkgs/ieee754.nix
new file mode 100644
index 0000000000000000000000000000000000000000..9ad3e497856ca91925638892b335e59b1e52ee8a
--- /dev/null
+++ b/pkgs/ieee754.nix
@@ -0,0 +1,21 @@
+{ mkDerivation, base, lib }:
+mkDerivation {
+  pname = "ieee754";
+  version = "0.8.0";
+  sha256 = "0e2dff9c37f59acf5c64f978ec320005e9830f276f9f314e4bfed3f482289ad1";
+  isLibrary = true;
+  isExecutable = false;
+  enableSeparateDataOutput = false;
+  libraryHaskellDepends = [ base ];
+  enableLibraryProfiling = false;
+  enableExecutableProfiling = false;
+  doHaddock = false;
+  jailbreak = true;
+  doCheck = false;
+  doBenchmark = false;
+  hyperlinkSource = false;
+  homepage = "http://github.com/patperry/hs-ieee754";
+  description = "Utilities for dealing with IEEE floating point numbers";
+  license = lib.licenses.bsd3;
+  broken = false;
+}