diff --git a/requirements.txt b/requirements.txt
index 3b28219..a0d2604 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,11 +1,11 @@
-kubernetes==9.0.1
-jupyterhub==1.0.0
-#jupyterhub-kubespawner==0.10.1
+kubernetes~=9.0.1
+jupyterhub~=1.0.0
+#jupyterhub-kubespawner~=0.10.1
 git+https://github.com/jupyterhub/kubespawner.git@a945ef01410867b39e0c174d362a8702bbaa15e9#egg=jupyterhub-kubespawner
 git+https://github.com/jupyterhub/wrapspawner.git@5f2b7075f77d0c1c49066682a8e8adad0dab76db
-jupyterhub-tmpauthenticator==0.6
-oauthenticator==0.9.0
-jupyterhub-ldapauthenticator==1.2.2
-psycopg2==2.8.4
-openshift==0.10.0
-wrapt==1.11.2
+jupyterhub-tmpauthenticator~=0.6
+oauthenticator~=0.9.0
+jupyterhub-ldapauthenticator~=1.2.2
+psycopg2~=2.8.4
+openshift~=0.10.0
+wrapt~=1.11.2