diff --git a/setup.py b/setup.py
index 87b91b6b..de4a53bc 100644
--- a/setup.py
+++ b/setup.py
@@ -21,9 +21,9 @@
                 'generator', 'ic', 'integrated circuit', 'chip'],
     packages=find_packages(),
     install_requires=[
-        'svreal>=0.2.0.dev1',
-        'msdsl>=0.1.6',
-        'anasymod>=0.1.9',
+        'svreal==0.2.0.dev1',
+        'msdsl==0.1.6',
+        'anasymod==0.1.9',
         'pexpect', 
         'pyyaml',
         'numpy',