diff --git a/requirements.txt b/requirements.txt
index d6e5e0119..b92834fcc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -53,7 +53,7 @@ MarkupSafe==2.1.1
 matplotlib-inline==0.1.3
 multidict==6.0.2
 mypy-extensions==0.4.3
-packageurl-python==0.9.9
+packageurl-python==0.10.3
 packaging==21.3
 paramiko==2.10.3
 parso==0.8.3
diff --git a/vulnerabilities/models.py b/vulnerabilities/models.py
index 49130d9ee..23cc67ab5 100644
--- a/vulnerabilities/models.py
+++ b/vulnerabilities/models.py
@@ -193,7 +193,7 @@ def for_package_url_object(self, purl):
             return self.filter(**lookups)
 
         elif isinstance(purl, str):
-            return self.for_package_url(purl)
+            return self.for_package_url(purl, encode=False)
 
         else:
             return self.none()
diff --git a/vulnerabilities/views.py b/vulnerabilities/views.py
index 6e85721d1..d8993f748 100644
--- a/vulnerabilities/views.py
+++ b/vulnerabilities/views.py
@@ -170,7 +170,7 @@ def get_object(self, queryset=None):
 
         purl = self.kwargs.get(self.slug_url_kwarg)
         if purl:
-            queryset = queryset.for_package_url(purl_str=purl)
+            queryset = queryset.for_package_url(purl_str=purl, encode=False)
         else:
             cls = self.__class__.__name__
             raise AttributeError(