diff --git a/vulnerabilities/importers/fireeye.py b/vulnerabilities/importers/fireeye.py
index 03fb3a8d5..404f2d367 100644
--- a/vulnerabilities/importers/fireeye.py
+++ b/vulnerabilities/importers/fireeye.py
@@ -112,7 +112,7 @@ def matcher_url(ref) -> str:
     """
     Returns URL of the reference markup from reference url in Markdown format
     """
-    markup_regex = "\[([^\[]+)]\(\s*(http[s]?://.+)\s*\)"
+    markup_regex = r"\[([^\[]+)]\(\s*(http[s]?://.+)\s*\)"
     matched_markup = re.findall(markup_regex, ref)
     if matched_markup:
         return matched_markup[0][1]
diff --git a/vulnerabilities/pipelines/v2_importers/fireeye_importer_v2.py b/vulnerabilities/pipelines/v2_importers/fireeye_importer_v2.py
index 89c3875ed..b1283d132 100644
--- a/vulnerabilities/pipelines/v2_importers/fireeye_importer_v2.py
+++ b/vulnerabilities/pipelines/v2_importers/fireeye_importer_v2.py
@@ -154,7 +154,7 @@ def matcher_url(ref) -> str:
     """
     Returns URL of the reference markup from reference url in Markdown format
     """
-    markup_regex = "\[([^\[]+)]\(\s*(http[s]?://.+)\s*\)"
+    markup_regex = r"\[([^\[]+)]\(\s*(http[s]?://.+)\s*\)"
     matched_markup = re.findall(markup_regex, ref)
     if matched_markup:
         return matched_markup[0][1]