diff --git a/requirements_dev_optional.txt b/requirements_dev_optional.txt
index d1ee5a891..0ac4922ce 100644
--- a/requirements_dev_optional.txt
+++ b/requirements_dev_optional.txt
@@ -3,7 +3,7 @@
 lmdb==1.4.1; sys_platform != 'win32'
 # optional library requirements for Jupyter
 ipytree==0.2.2
-ipywidgets==8.1.0
+ipywidgets==8.1.1
 # optional library requirements for services
 # don't let pyup change pinning for azure-storage-blob, need to pin to older
 # version to get compatibility with azure storage emulator on appveyor (FIXME)