diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 95edacd..e7e788f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,7 +6,7 @@ on:
 
 jobs:
   test:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     strategy:
       matrix:
         name:
@@ -90,12 +90,12 @@ jobs:
 
         - name: Node.js 8.x
           node-version: "8.17"
-          npm-i: mocha@7.1.2
+          npm-i: mocha@7.1.2 nyc@14.1.1
           npm-rm: beautify-benchmark benchmark top-sites
 
         - name: Node.js 9.x
           node-version: "9.11"
-          npm-i: mocha@7.1.2
+          npm-i: mocha@7.1.2 nyc@14.1.1
           npm-rm: beautify-benchmark benchmark top-sites
 
         - name: Node.js 10.x
@@ -131,7 +131,10 @@ jobs:
       shell: bash -eo pipefail -l {0}
       run: |
         if [[ "${{ matrix.node-version }}" == 0.6* ]]; then
-          sudo apt-get install g++-4.8 gcc-4.8 libssl1.0-dev
+          sudo sh -c 'echo "deb http://us.archive.ubuntu.com/ubuntu/ bionic universe" >> /etc/apt/sources.list'
+          sudo sh -c 'echo "deb http://security.ubuntu.com/ubuntu bionic-security main" >> /etc/apt/sources.list'
+          sudo apt-get update
+          sudo apt-get install g++-4.8 gcc-4.8 libssl1.0-dev python2 python-is-python2
           export CC=/usr/bin/gcc-4.8
           export CXX=/usr/bin/g++-4.8
         fi