diff --git a/requirements_dev_optional.txt b/requirements_dev_optional.txt
index 1022e56ec5..54b4ad96b1 100644
--- a/requirements_dev_optional.txt
+++ b/requirements_dev_optional.txt
@@ -2,7 +2,7 @@
 # bsddb3==6.2.6; sys_platform != 'win32'
 lmdb==1.3.0; sys_platform != 'win32'
 # optional library requirements for Jupyter
-ipytree==0.2.1
+ipytree==0.2.2
 # 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)