diff --git a/nixos/tests/nginx-http3.nix b/nixos/tests/nginx-http3.nix
index f003130b46f5..fc9f31037f98 100644
--- a/nixos/tests/nginx-http3.nix
+++ b/nixos/tests/nginx-http3.nix
@@ -76,19 +76,19 @@ in
     server.wait_for_open_port(443)
 
     # Check http connections
-    client.succeed("curl --verbose --http3 https://acme.test | grep 'Hello World!'")
+    client.succeed("curl --verbose --http3-only https://acme.test | grep 'Hello World!'")
 
     # Check downloadings
-    client.succeed("curl --verbose --http3 https://acme.test/example.txt --output /tmp/example.txt")
+    client.succeed("curl --verbose --http3-only https://acme.test/example.txt --output /tmp/example.txt")
     client.succeed("cat /tmp/example.txt | grep 'Check http3 protocol.'")
 
     # Check header reading
-    client.succeed("curl --verbose --http3 --head https://acme.test | grep 'content-type'")
-    client.succeed("curl --verbose --http3 --head https://acme.test | grep 'HTTP/3 200'")
-    client.succeed("curl --verbose --http3 --head https://acme.test/error | grep 'HTTP/3 404'")
+    client.succeed("curl --verbose --http3-only --head https://acme.test | grep 'content-type'")
+    client.succeed("curl --verbose --http3-only --head https://acme.test | grep 'HTTP/3 200'")
+    client.succeed("curl --verbose --http3-only --head https://acme.test/error | grep 'HTTP/3 404'")
 
     # Check change User-Agent
-    client.succeed("curl --verbose --http3 --user-agent 'Curl test 3.0' https://acme.test")
+    client.succeed("curl --verbose --http3-only --user-agent 'Curl test 3.0' https://acme.test")
     server.succeed("cat /var/log/nginx/access.log | grep 'Curl test 3.0'")
 
     server.shutdown()
diff --git a/pkgs/development/libraries/nghttp3/default.nix b/pkgs/development/libraries/nghttp3/default.nix
index e7d57d457bde..38e996330e71 100644
--- a/pkgs/development/libraries/nghttp3/default.nix
+++ b/pkgs/development/libraries/nghttp3/default.nix
@@ -6,13 +6,13 @@
 
 stdenv.mkDerivation rec {
   pname = "nghttp3";
-  version = "0.10.0";
+  version = "0.11.0";
 
   src = fetchFromGitHub {
     owner = "ngtcp2";
     repo = pname;
     rev = "v${version}";
-    hash = "sha256-V0g/d1B9uMn7KZU6ShzyPGXOSAYCbz4ZubnhAwz+Qsc=";
+    hash = "sha256-fZMFSQ8RCVxuoLrisa8lLqjNVe4fIuGqbyKtkC/u02M=";
   };
 
   outputs = [ "out" "dev" "doc" ];
diff --git a/pkgs/development/libraries/ngtcp2/default.nix b/pkgs/development/libraries/ngtcp2/default.nix
index af8ef8623d51..e85a7674a263 100644
--- a/pkgs/development/libraries/ngtcp2/default.nix
+++ b/pkgs/development/libraries/ngtcp2/default.nix
@@ -8,13 +8,13 @@
 
 stdenv.mkDerivation rec {
   pname = "ngtcp2";
-  version = "0.14.1";
+  version = "0.15.0";
 
   src = fetchFromGitHub {
     owner = "ngtcp2";
     repo = pname;
     rev = "v${version}";
-    hash = "sha256-VsacRYvjTWVx2ga952s1vs02GElXIW6umgcYr3UCcgE=";
+    hash = "sha256-FWNWpRuCUyqTIyLZkBFKrd2urjSCqHp20mBAXOcJm14=";
   };
 
   outputs = [ "out" "dev" "doc" ];