diff --git a/docs/source/supported-os.md b/docs/source/supported-os.md
index 0241b5849..928dc0785 100644
--- a/docs/source/supported-os.md
+++ b/docs/source/supported-os.md
@@ -2,7 +2,10 @@ Supported Operating Systems
 ===========================
 RSS Guard is a cross-platform application, and at this point it is known to work on:
 * Windows 7+
-* GNU/Linux (including PinePhone and other Linux-based phone operating systems)
+* GNU/Linux
+    * Regular mainstream Linux distributions (Arch, Ubuntu, Manjaro, Debian, Fedora, etc.)
+    * PinePhone (smartphone OS)
+    * [Inkbox](https://github.com/Szybet/rssguard-inkbox) (e-ink book readers OS)
 * BSD (FreeBSD, OpenBSD, NetBSD, etc.)
 * macOS 10.14+
 * OS/2 (ArcaOS, eComStation)
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