diff --git a/Python/environment.yml b/Python/environment.yml
index f4a5f894..5ffc30cd 100644
--- a/Python/environment.yml
+++ b/Python/environment.yml
@@ -1,7 +1,6 @@
 name: sitkpy
 
 channels:
-  - defaults
   - conda-forge
 
 dependencies:
diff --git a/environment.yml b/environment.yml
index f4a5f894..5ffc30cd 100644
--- a/environment.yml
+++ b/environment.yml
@@ -1,7 +1,6 @@
 name: sitkpy
 
 channels:
-  - defaults
   - conda-forge
 
 dependencies: