diff --git a/src/backend/html_markdown.py b/src/backend/html_markdown.py
index 6176d1b2..b7234d69 100644
--- a/src/backend/html_markdown.py
+++ b/src/backend/html_markdown.py
@@ -151,7 +151,7 @@ class HTMLProcessor:
if isinstance(r, str) else r for r in [
# Normal :// URLs
(r"(?P[a-z\d]+://(?P[a-z\d._-]+(?:\:\d+)?)"
- r"(?:/[/\-.,\w#%&?:;=~!$*+^@]*)?(?:\([/\-_.,a-z\d#%&?;=~]*\))?)"),
+ r"(?:/[/\-.,\w#%&?:;=~!$*+^@']*)?(?:\([/\-_.,a-z\d#%&?;=~]*\))?)"),
# mailto: and tel:
r"mailto:(?P[a-z0-9._-]+@(?P[a-z0-9.:-]*[a-z\d]))",