diff --git a/setup.py b/setup.py
index 4ecb177..934480a 100644
--- a/setup.py
+++ b/setup.py
@@ -14,7 +14,7 @@
     author_email='samuel.gulliksson@gmail.com',
     description='Flask extension for OpenID Connect authentication.',
     install_requires=[
-        'oic>=1.4.0',
+        'oic==1.4.0',
         'Flask',
         'requests',
         'importlib_resources'