diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 02cd62674..80b5401a4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
           - name: "Linux / OpenSSL 1.1.0"
             command: make -f misc/docker-ci.mk CMAKE_ARGS='-DOPENSSL_ROOT_DIR=-DOPENSSL_ROOT_DIR=/opt/openssl-1.1.0 -DWITH_FUSION=OFF' CONTAINER_NAME='h2oserver/h2o-ci:ubuntu1604'
           - name: "Linux / OpenSSL 1.1.1"
-            command: make -f misc/docker-ci.mk
+            command: make -f misc/docker-ci.mk CMAKE_ARGS='-DWITH_AEGIS=1 -DAEGIS_INCLUDE_DIR=/usr/local/include'
           - name: "Linux / OpenSSL 3.0"
             command: make -f misc/docker-ci.mk CONTAINER_NAME=h2oserver/h2o-ci:ubuntu2204
           - name: "Linux / OpenSSL 1.1.1 + ASan & UBSan"