diff --git a/dateparser/languages/locale.py b/dateparser/languages/locale.py
index be8f77631..a64c7e79b 100644
--- a/dateparser/languages/locale.py
+++ b/dateparser/languages/locale.py
@@ -10,7 +10,6 @@
 
 from .dictionary import Dictionary, NormalizedDictionary, ALWAYS_KEEP_TOKENS
 
-DIGIT_GROUP_PATTERN = re.compile(r'\\d\+')
 NUMERAL_PATTERN = re.compile(r'(\d+)', re.U)
 
 
@@ -170,7 +169,7 @@ def _generate_relative_translations(self, normalize=False):
             if normalize:
                 value = list(map(normalize_unicode, value))
             pattern = '|'.join(sorted(value, key=len, reverse=True))
-            pattern = DIGIT_GROUP_PATTERN.sub(r'?P<n>\d+', pattern)
+            pattern = pattern.replace(r'(\d+', r'(?P<n>\d+')
             pattern = re.compile(r'^(?:{})$'.format(pattern), re.UNICODE | re.IGNORECASE)
             relative_dictionary[pattern] = key
         return relative_dictionary
diff --git a/setup.py b/setup.py
index 96a9e1390..882e0068b 100644
--- a/setup.py
+++ b/setup.py
@@ -27,7 +27,7 @@
         'python-dateutil',
         'pytz',
         # https://bitbucket.org/mrabarnett/mrab-regex/issues/314/import-error-no-module-named
-        'regex !=2019.02.19,!=2021.8.27,<2022.3.15',
+        'regex !=2019.02.19,!=2021.8.27',
         'tzlocal',
     ],
     entry_points={