diff --git a/requirements.txt b/requirements.txt
index baff1f9..bca6a60 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,7 +26,7 @@ click==7.1.2
     # via
     #   flask
     #   pip-tools
-cryptography==37.0.2
+cryptography==39.0.1
     # via oic
 csh-ldap==2.3.1
     # via -r requirements.in
@@ -60,6 +60,8 @@ flask-sqlalchemy==2.5.1
     #   flask-migrate
 future==0.18.2
     # via pyjwkest
+greenlet==2.0.2
+    # via sqlalchemy
 gunicorn==20.0.4
     # via -r requirements.in
 idna==3.3
@@ -176,8 +178,6 @@ wheel==0.37.1
     # via pip-tools
 wrapt==1.12.1
     # via astroid
-zipp==3.8.0
-    # via importlib-resources
 
 # The following packages are considered to be unsafe in a requirements file:
 # pip