diff --git a/requirements.txt b/requirements.txt
index 5146ded..f4ce156 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 bitstruct==6.0.0
 pytest==4.3.0
 pyusb==1.0.2
-sphinx==1.8.4
+sphinx==3.0.4
 pytest-cov==2.6.1
 pylint==2.2.2
 git-pylint-commit-hook==2.5.1