diff --git a/requirements.txt b/requirements.txt
index 9b0d36e..8daec18 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ astroid==2.4.2
 async-generator==1.10
 attrs==20.3.0
 backcall==0.2.0
-bleach==3.2.1
+bleach==3.3.0
 certifi==2020.12.5
 cffi==1.14.4
 chardet==3.0.4
@@ -22,7 +22,7 @@ json5==0.9.5
 jsonschema==3.2.0
 jupyter-client==6.1.7
 jupyter-core==4.7.0
-jupyterlab==2.2.10
+jupyterlab==2.2.9
 jupyterlab-pygments==0.1.2
 jupyterlab-server==1.2.0
 kiwisolver==1.3.1
@@ -61,7 +61,7 @@ testpath==0.4.4
 toml==0.10.2
 tornado==6.1
 traitlets==5.0.5
-urllib3==1.26.5
+urllib3==1.26.2
 wcwidth==0.2.5
 webencodings==0.5.1
 wrapt==1.12.1