diff --git a/rich/highlighter.py b/rich/highlighter.py
index 9fe85955..4a770aea 100644
--- a/rich/highlighter.py
+++ b/rich/highlighter.py
@@ -78,7 +78,7 @@ class ReprHighlighter(RegexHighlighter):
         r"(?P<number>(?<!\w)\-?[0-9]+\.?[0-9]*(e[\-\+]?\d+?)?\b)",
         r"(?P<number>0x[0-9a-f]*)",
         r"(?P<path>\B(\/[\w\.\-\_\+]+)*\/)(?P<filename>[\w\.\-\_\+]*)?",
-        r"(?P<ipv4>[0-9]{1,3}\.[0-9]{1,3}\.[0-gt9]{1,3}\.[0-9]{1,3})",
+        r"(?P<ipv4>[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})",
         r"(?P<ipv6>([A-Fa-f0-9]{1,4}::?){1,7}[A-Fa-f0-9]{1,4})",
         r"(?<!\\)(?P<str>b?\'\'\'.*?(?<!\\)\'\'\'|b?\'.*?(?<!\\)\'|b?\"\"\".*?(?<!\\)\"\"\"|b?\".*?(?<!\\)\")",
         r"(?P<url>https?:\/\/[0-9a-zA-Z\$\-\_\+\!`\(\)\,\.\?\/\;\:\&\=\%\#]*)",