diff --git a/default.nix b/default.nix
index 6b80f6c..1fbc8ce 100644
--- a/default.nix
+++ b/default.nix
@@ -27,6 +27,10 @@ self: super:
 
   ngtcp2-debug = super.enableDebugging self.ngtcp2;
 
+  nghttp3 = super.callPackage ./pkgs/nghttp3/default.nix { };
+
+  nghttp3-debug = super.enableDebugging self.nghttp3;
+
   inherit (super.callPackages ./pkgs/nim { })
     nim-unwrapped nimble-unwrapped nim;
 
diff --git a/pkgs/ngtcp2/default.nix b/pkgs/ngtcp2/default.nix
index 0668a7d..5fa39d7 100644
--- a/pkgs/ngtcp2/default.nix
+++ b/pkgs/ngtcp2/default.nix
@@ -3,6 +3,8 @@
 , stdenv
 , fetchFromGitHub
 , gnutls-latest
+, libev
+, nghttp3
 , pkgconfig
 }:
 
@@ -30,6 +32,8 @@ stdenv.mkDerivation rec {
 
   buildInputs = [
     gnutls-latest
+    libev
+    nghttp3
   ];
 
   meta = with lib; {