diff --git a/README.md b/README.md
index 1e82f3f3..5c32049f 100644
--- a/README.md
+++ b/README.md
@@ -85,8 +85,9 @@ which might be a caveat for some workloads.
 DB](https://en.wikipedia.org/wiki/Berkeley_DB) and/or
 [dbm](https://en.wikipedia.org/wiki/DBM_(computing)) API.
 
- - _libmdbx_ supports Linux, Windows, MacOS, FreeBSD and other systems
-compliant with POSIX.1-2008.
+ - _libmdbx_ supports Linux, Windows, MacOS, FreeBSD, DragonFly, Solaris,
+OpenSolaris, OpenIndiana, NetBSD, OpenBSD and other systems compliant with
+POSIX.1-2008.
 
 ### Comparison with other databases
 For now please refer to [chapter of "BoltDB comparison with other
diff --git a/mdbx.h b/mdbx.h
index fe55b00b..9e66c0df 100644
--- a/mdbx.h
+++ b/mdbx.h
@@ -3,8 +3,9 @@
  * libmdbx is superior to LMDB (https://bit.ly/26ts7tL) in terms of features
  * and reliability, not inferior in performance. In comparison to LMDB, libmdbx
  * makes many things just work perfectly, not silently and catastrophically
- * break down. libmdbx supports Linux, Windows, MacOS, FreeBSD and other
- * systems compliant with POSIX.1-2008.
+ * break down. libmdbx supports Linux, Windows, MacOS, FreeBSD, DragonFly,
+ * Solaris, OpenSolaris, OpenIndiana, NetBSD, OpenBSD and other systems
+ * compliant with POSIX.1-2008.
  *
  * Look below for API description, for other information (build, embedding and
  * amalgamation, improvements over LMDB, benchmarking, etc) please refer to