diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 38dc4da7..ff3bce76 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -185,7 +185,7 @@ jobs:
       run: |
         if npm -ps ls nyc | grep -q nyc; then
           npm run test-ci
-          cp coverage/lcov.info "coverage/${{ matrix.name }}.lcov"
+          cp coverage/lcov.info "coverage/${{ matrix.node-version }}.lcov"
         else
           npm test
         fi
@@ -198,17 +198,17 @@ jobs:
       if: steps.list_env.outputs.nyc != ''
       run: |
         if [[ -d ./coverage ]]; then
-          mv ./coverage "./${{ matrix.name }}"
+          mv ./coverage "./${{ matrix.node-version }}"
           mkdir ./coverage
-          mv "./${{ matrix.name }}" "./coverage/${{ matrix.name }}"
+          mv "./${{ matrix.node-version }}" "./coverage/${{ matrix.node-version }}"
         fi
 
     - name: Upload code coverage
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       if: steps.list_env.outputs.nyc != ''
       with:
-        name: coverage
-        path: ./coverage
+        name: coverage-${{ matrix.node-version }}
+        path: "./coverage/${{ matrix.node-version }}"
         retention-days: 1
 
   coverage:
@@ -222,9 +222,8 @@ jobs:
       run: sudo apt-get -y install lcov
 
     - name: Collect coverage reports
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
-        name: coverage
         path: ./coverage
 
     - name: Merge coverage reports
diff --git a/.gitignore b/.gitignore
index 207febba..1b6fef23 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,5 @@ coverage
 node_modules
 npm-debug.log
 package-lock.json
+/test/fixtures/server.crt
+/test/fixtures/server.key
diff --git a/package.json b/package.json
index e3322438..79cb1b4c 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
   },
   "scripts": {
     "lint": "eslint . && node ./scripts/lint-readme.js",
-    "test": "mocha --require test/support/env --check-leaks --bail --no-exit --reporter spec test/",
+    "test": "./test/support/gencert.sh && mocha --require test/support/env --check-leaks --bail --no-exit --reporter spec test/",
     "test-ci": "nyc --reporter=lcov --reporter=text npm test",
     "test-cov": "nyc npm test",
     "version": "node scripts/version-history.js && git add HISTORY.md"
diff --git a/test/fixtures/.gitkeep b/test/fixtures/.gitkeep
new file mode 100644
index 00000000..e69de29b
diff --git a/test/fixtures/server.crt b/test/fixtures/server.crt
deleted file mode 100644
index c019198a..00000000
--- a/test/fixtures/server.crt
+++ /dev/null
@@ -1,14 +0,0 @@
------BEGIN CERTIFICATE-----
-MIICMzCCAZwCCQCJTms0qcIZgDANBgkqhkiG9w0BAQUFADBeMQswCQYDVQQGEwJV
-UzEQMA4GA1UECBMHSW5kaWFuYTEdMBsGA1UEChMUbm9kZS1leHByZXNzLXNlc3Np
-b24xHjAcBgNVBAMTFWV4cHJlc3Mtc2Vzc2lvbi5sb2NhbDAeFw0xNDExMjMwNTQ3
-MzlaFw0yNDExMjAwNTQ3MzlaMF4xCzAJBgNVBAYTAlVTMRAwDgYDVQQIEwdJbmRp
-YW5hMR0wGwYDVQQKExRub2RlLWV4cHJlc3Mtc2Vzc2lvbjEeMBwGA1UEAxMVZXhw
-cmVzcy1zZXNzaW9uLmxvY2FsMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDY
-G398zqN6Yv/FAx77eoLLje4VNCYDXUciWBzceaZ5u/rtP/XshTQWDKFfUbb/kmni
-DazsCasSoNsUCrcqQPJF1jF3F9XjsZxcggDab8MAbAMhnhJax2l3yPJsWnB/8mrY
-cdsdQNPXJxQW9MMZgUxz73gIY5/rEeayU9owgcnVcQIDAQABMA0GCSqGSIb3DQEB
-BQUAA4GBADi0XXsZlQAKxOyD4qvdJNWJXlfqhr1q53dZmfF7nikDaMDiMspczTS/
-pxNbq2UaMc7g+6qmXPaPQoN3laQQtMdyVfSh6EIJHbzXXzdcCT4fDBYX7iwvh0Gg
-DUpjmxmCzFCaob9+hZzwbJi5MFQ4Qq12LW1aYHMs8wgLboHml1WL
------END CERTIFICATE-----
diff --git a/test/fixtures/server.key b/test/fixtures/server.key
deleted file mode 100644
index dabf2b83..00000000
--- a/test/fixtures/server.key
+++ /dev/null
@@ -1,15 +0,0 @@
------BEGIN RSA PRIVATE KEY-----
-MIICXQIBAAKBgQDYG398zqN6Yv/FAx77eoLLje4VNCYDXUciWBzceaZ5u/rtP/Xs
-hTQWDKFfUbb/kmniDazsCasSoNsUCrcqQPJF1jF3F9XjsZxcggDab8MAbAMhnhJa
-x2l3yPJsWnB/8mrYcdsdQNPXJxQW9MMZgUxz73gIY5/rEeayU9owgcnVcQIDAQAB
-AoGBALB8HGw/kPA1Ay3Qc6/qCADWYvW8BcM/nQUmMkO3sUW/R5gTYPIMglHzdKIU
-aL9kwcXTZ0HIT4ZCCUffzF/cdD0lqCZjwGl0aM4xUZcPbaM/KmZOUcP92ymsN+rF
-uuJXks6hxrmJ5hh5D6FXdlQjTCdG3u9w0+KD4n1BkBkEaqflAkEA9q4TBt1bLOvV
-bbwz7bunI6bwS5eD7sVn1qUqrm6hcirhF1xCv75pO/uqAyccbguxjp8y2LNuN+cO
-IgSwr+Jq1wJBAOBFuKSMAcg2WmJ4IAT7143yhoHKMgA8Nl4sfLFwFl2/hw+fdEBe
-gndRfKHT4IV/YLcnS7d/H6mEMSAusWx5QPcCQQDTYaF+TWrW2JRAf3jEK/xyiZf6
-PrDYh6KOhWRIqxZ/fYz69p1gL6t/sg0ivH4ZMr4JKBRrK360OrOapQg+/7drAkB6
-3pfPRok/aE/SfN+F+3fX49Q/TUhhipt6ssLJ74/BYsobDBADqAOwXSt7+XmbifKx
-xUydRn9RPwQvDoXT2QZ3AkAdnwR9PMEHAsaibrPyzBztKjPL2rWBRk1QAmcdrTpt
-XL99XfmkERWtiBA/Lz2K332qYOa/zo5c/SADx9fm7+HP
------END RSA PRIVATE KEY-----
diff --git a/test/support/gencert.sh b/test/support/gencert.sh
new file mode 100755
index 00000000..cfdda070
--- /dev/null
+++ b/test/support/gencert.sh
@@ -0,0 +1,5 @@
+#! /bin/sh
+set -ex
+
+openssl req -x509 -nodes -newkey rsa:2048 -keyout ./test/fixtures/server.key -out ./test/fixtures/server.crt -days 3650 \
+-subj "/C=US/ST=Illinois/L=Chicago/O=node-express-session/CN=express-session.local"