diff --git a/environment.yml b/environment.yml
index cd0ec20418ca520202a8ebdcded914516bd9d730..c9752688e6a26f7550601269b160d255cc27df5c 100644
--- a/environment.yml
+++ b/environment.yml
@@ -4,9 +4,9 @@ channels:
 dependencies:
   - pip:
     - pvl
-    - protobuf=3.0.0b2
+    - protobuf==3.0.0b2
   - gdal>2.x
   - h5py
   - pandas
   - sqlalchemy
-  - pyyaml
\ No newline at end of file
+  - pyyaml