diff --git a/environment.yml b/environment.yml
index a6d8162bd77f5502aa5940658cc5b1d211ed922f..f84f390b67d27a4ebc11cec808541e3fb08cdff6 100644
--- a/environment.yml
+++ b/environment.yml
@@ -40,7 +40,7 @@ dependencies:
   - nlohmann_json
   - ninja==1.7.2
   - nn
-  - opencv>=3.0.0,<=4.0.0
+  - opencv=3.2
   - openssl>=1.0.0,<1.1.0
   - pcl
   - protobuf=3.9.1