diff --git a/.github/workflows/http3-linux.yml b/.github/workflows/http3-linux.yml
index 285843cf19..0b13dcf4d5 100644
--- a/.github/workflows/http3-linux.yml
+++ b/.github/workflows/http3-linux.yml
@@ -370,10 +370,11 @@ jobs:
 
           - name: 'libressl'
             install_steps: skipall
-            PKG_CONFIG_PATH: /home/runner/libressl/build/lib/pkgconfig:/home/runner/nghttp3/build/lib/pkgconfig:/home/runner/ngtcp2/build/lib/pkgconfig:/home/runner/nghttp2/build/lib/pkgconfig
+            # Intentionally using '--with-ngtcp2=<path>' to test this way of configuration, in addition to bare '--with-ngtcp2' + 'PKG_CONFIG_PATH' in other jobs.
+            PKG_CONFIG_PATH: /home/runner/libressl/build/lib/pkgconfig:/home/runner/nghttp3/build/lib/pkgconfig:/home/runner/nghttp2/build/lib/pkgconfig
             configure: >-
               LDFLAGS=-Wl,-rpath,/home/runner/libressl/build/lib
-              --with-openssl=/home/runner/libressl/build --with-ngtcp2 --enable-ssls-export
+              --with-openssl=/home/runner/libressl/build --with-ngtcp2=/home/runner/ngtcp2/build --enable-ssls-export
               --enable-unity
 
           - name: 'libressl'