diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9f25720c843..50690a6435a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -198,7 +198,7 @@ jobs:
     - uses: actions/checkout@v2
 
     - name: Add wget and python3
-      run: apt-get update && apt-get install -y python3-dev python3-numpy python3-pytest libeigen3-dev
+      run: apt-get update && apt-get install -y python3-dev python3-numpy python3-pytest libeigen3-dev python3-pytest-cov
 
     - name: Configure
       shell: bash
@@ -233,7 +233,7 @@ jobs:
 
     # tzdata will try to ask for the timezone, so set the DEBIAN_FRONTEND
     - name: Install 🐍 3
-      run: apt-get update && DEBIAN_FRONTEND="noninteractive" apt-get install -y cmake git python3-dev python3-pytest python3-numpy
+      run: apt-get update && DEBIAN_FRONTEND="noninteractive" apt-get install -y cmake git python3-dev python3-pytest python3-numpy python3-pytest-cov
 
     - name: Configure
       run: cmake -S . -B build -DPYBIND11_CUDA_TESTS=ON -DPYBIND11_WERROR=ON -DDOWNLOAD_CATCH=ON
@@ -256,7 +256,7 @@ jobs:
 #    - uses: actions/checkout@v2
 #
 #    - name: Add Python 3 and a few requirements
-#      run: yum update -y && yum install -y git python3-devel python3-numpy python3-pytest make environment-modules
+#      run: yum update -y && yum install -y git python3-devel python3-numpy python3-pytest make environment-modules python3-pytest-cov
 #
 #    - name: Install CMake with pip
 #      run: |
@@ -359,7 +359,7 @@ jobs:
     - uses: actions/checkout@v1
 
     - name: Add Python 3
-      run: apt-get update; apt-get install -y python3-dev python3-numpy python3-pytest python3-pip libeigen3-dev
+      run: apt-get update; apt-get install -y python3-dev python3-numpy python3-pytest python3-pip libeigen3-dev python3-pytest-cov
 
     - name: Update pip
       run: python3 -m pip install --upgrade pip