diff --git a/motioneye/requirements.txt b/motioneye/requirements.txt
index d418f92..d7981f1 100644
--- a/motioneye/requirements.txt
+++ b/motioneye/requirements.txt
@@ -5,6 +5,6 @@ MarkupSafe==1.1.1
 motioneye==0.42.1
 pillow==6.2.2
 pycurl==7.43.0.5
-singledispatch==3.7.0
+singledispatch==4.0.0
 six==1.16.0
 tornado==5.1.1