Change Linux distribution to reflect reality.
diff --git a/README.md b/README.md
index 089cc01..a0c3bf2 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@
These include, for example, a zero-copy mode and optional JSON output.
Note that iperf3 is *not* backwards compatible with the original iperf.
-Primary development for iperf3 takes place on CentOS Linux, FreeBSD,
+Primary development for iperf3 takes place on Ubuntu Linux, FreeBSD,
and macOS. At this time, these are the only officially supported
platforms, however there have been some reports of success with
OpenBSD, NetBSD, Android, Solaris, and other Linux distributions.