diff --git a/.github/workflows/test-docker.yml b/.github/workflows/test-docker.yml
index db866774c..2762d80c9 100644
--- a/.github/workflows/test-docker.yml
+++ b/.github/workflows/test-docker.yml
@@ -25,6 +25,7 @@ jobs:
           debian-11-bullseye-x86,
           fedora-34-amd64,
           fedora-35-amd64,
+          gentoo,
           ubuntu-18.04-bionic-amd64,
           ubuntu-20.04-focal-amd64,
         ]
diff --git a/docs/installation.rst b/docs/installation.rst
index 4add81352..d59f6b8e4 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -465,6 +465,8 @@ These platforms are built and tested for every change.
 +----------------------------------+----------------------------+---------------------+
 | Fedora 35                        | 3.10                       | x86-64              |
 +----------------------------------+----------------------------+---------------------+
+| Gentoo                           | 3.9                        | x86-64              |
++----------------------------------+----------------------------+---------------------+
 | macOS 10.15 Catalina             | 3.7, 3.8, 3.9, 3.10, PyPy3 | x86-64              |
 +----------------------------------+----------------------------+---------------------+
 | Ubuntu Linux 18.04 LTS (Bionic)  | 3.9                        | x86-64              |