diff --git a/README.md b/README.md
index 405cbbf..f61608c 100644
--- a/README.md
+++ b/README.md
@@ -48,7 +48,7 @@ through github.com. Please check out http://ddclient.net
   * Perl v5.10.1 or later
       * `IO::Socket::SSL` perl library for ssl-support
       * `JSON::PP` perl library for JSON support
-      * `IO::Socket:INET6` perl library for ipv6-support
+      * `IO::Socket::INET6` perl library for ipv6-support
   * Linux, macOS, or any other Unix-ish system
   * An implementation of `make` (such as [GNU
     Make](https://www.gnu.org/software/make/))