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-rw-r--r--doc/src/guide/introduction.asciidoc2
1 files changed, 1 insertions, 1 deletions
diff --git a/doc/src/guide/introduction.asciidoc b/doc/src/guide/introduction.asciidoc
index d904c65..a682c46 100644
--- a/doc/src/guide/introduction.asciidoc
+++ b/doc/src/guide/introduction.asciidoc
@@ -15,7 +15,7 @@ with socket programming and TCP protocols.
Ranch is tested and supported on Linux, FreeBSD, macOS and Windows.
-Ranch is developed for Erlang/OTP 21+.
+Ranch is developed for Erlang/OTP 22+.
Ranch may be compiled on earlier Erlang versions with small source code
modifications but there is no guarantee that it will work as expected.