diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
index be71c25..436ae0f 100644
--- a/.github/workflows/wheels.yml
+++ b/.github/workflows/wheels.yml
@@ -37,7 +37,7 @@ jobs:
           merge-multiple: true
       - name: Install
         run: |
-          apt-get install -y libtbb2 libmpfr6
+          apt-get install -y libtbb2 libmpfr6 g++
           pip install dist/*.tar.gz
   build_wheels:
     name: Wheels
diff --git a/README.md b/README.md
index 8432fd9..f607ce1 100644
--- a/README.md
+++ b/README.md
@@ -64,13 +64,13 @@ On RPM-based Linux distributions (using `dnf`), if you are:
    available), `sudo dnf install -y gcc-c++ tbb-devel mpfr-devel gmp-devel`
 2. using the packaged binary (wheels are available), `sudo dnf install -y gmp mpfr tbb`
 
-On DEB-based Linux distributions (using `apt`), you need to `sudo apt install -y libtbb-dev libmpfr-dev libgmp-dev`.
+On DEB-based Linux distributions (using `apt`), you need to `sudo apt install -y g++ libtbb-dev libmpfr-dev libgmp-dev`.
 
 On macOS, you need to `brew install tbb mpfr gmp`.
 
 Then install the package with `pip`.
 
-```
+```bash
 pip install pyvpmr
 ```