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()