diff --git a/scrutiny/projects/urls.py b/scrutiny/projects/urls.py
index 8756f89..f5d42bf 100644
--- a/scrutiny/projects/urls.py
+++ b/scrutiny/projects/urls.py
@@ -10,10 +10,10 @@ urlpatterns = patterns('',
     url(r'^(?P<slug>[\w,-]+)/$', ProjectDetailView.as_view(), name='project-view'),
     url(r'^(?P<slug>[\w,-]+)/history$', ProjectSummaryHistoryView.as_view(), name='project-summary-history'),
     url(r'^(?P<slug>[\w,-]+)/detailed-history$', ProjectHistoryView.as_view(), name='project-history'),
-    url(r'^modules/(?P<name>[\w,-]+)/diff/(?P<commit1>[\w,\.]+)/(?P<commit2>[\w,\.]+)$',
+    url(r'^modules/(?P<name>[\w,-]+)/diff/(?P<commit1>[\w,\.-]+)/(?P<commit2>[\w,\.-]+)$',
         ModuleDiffView.as_view(), name='module-diff'),
     url(r'^issues/snippet/$', IssuesSnippet.as_view(), name='issues-snippet'),
-    url(r'^modules/(?P<name>[\w,-]+)/issues/(?P<commit1>[\w,\.]+)/(?P<commit2>[\w,\.]+)$',
+    url(r'^modules/(?P<name>[\w,-]+)/issues/(?P<commit1>[\w,\.-]+)/(?P<commit2>[\w,\.-]+)$',
         ModuleIssuesView.as_view(), name='module-issues'),
     url(r'^modules/(?P<name>[\w,-]+)/$',
         ModuleDeploymentsView.as_view(), name='module-deployments'),