diff --git a/setup.cfg b/setup.cfg
index c47bf07..c40f44a 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -27,7 +27,7 @@ classifiers =
 packages = find_namespace:
 python_requires = >=3.6
 install_requires =
-    cocotb
+    cocotb >= 1.6.0
     cocotb-bus
 
 [options.extras_require]