diff --git a/.github/convert_tag_date.py b/.github/convert_tag_date.py
index 99ba803..fe6bdaf 100644
--- a/.github/convert_tag_date.py
+++ b/.github/convert_tag_date.py
@@ -10,7 +10,7 @@ args = parser.parse_args()
 tag = args.tag
 # A format of the tag is r+yyyyMMdd, we
 # strip out any non digit symbols here.
-date_str = re.sub(r'[^\d]', '', tag)
+date_str = re.match(r'[^\d]*(\d+).*', tag).group(1)
 date = datetime.strptime(date_str, '%Y%m%d')
 
 # Release date.
diff --git a/.github/convert_tag_release_name.py b/.github/convert_tag_release_name.py
index 12ecc3f..595a920 100644
--- a/.github/convert_tag_release_name.py
+++ b/.github/convert_tag_release_name.py
@@ -10,7 +10,7 @@ args = parser.parse_args()
 tag = args.tag
 # A format of the tag is r+yyyyMMdd, we
 # strip out any non digit symbols here.
-date_str = re.sub(r'[^\d]', '', tag)
+date_str = re.match(r'[^\d]*(\d+).*', tag).group(1)
 date = datetime.strptime(date_str, '%Y%m%d')
 
 # Release date name.