diff --git a/.github/workflows/basic.yml b/.github/workflows/basic.yml
index 6e743c49..3861b39d 100644
--- a/.github/workflows/basic.yml
+++ b/.github/workflows/basic.yml
@@ -24,8 +24,8 @@ jobs:
       matrix:
         python: 
           - 2.7.18
-          - 3.6.8
-          - 3.9.4
+          - 3.6.15
+          - 3.9.17
 
     container: python:${{ matrix.python }}-slim
     steps:
@@ -54,8 +54,8 @@ jobs:
       matrix:
         python: 
           - 2.7.18
-          - 3.6.8
-          - 3.9.4
+          - 3.6.15
+          - 3.9.17
 
     container: python:${{ matrix.python }}-slim
     steps:
@@ -77,8 +77,8 @@ jobs:
       matrix:
         python: 
           - 2.7.18
-          - 3.6.8
-          - 3.9.4
+          - 3.6.15
+          - 3.9.17
 
     container: python:${{ matrix.python }}-slim
     steps:
diff --git a/environment.yml b/environment.yml
index ab3da8f2..41e0a564 100644
--- a/environment.yml
+++ b/environment.yml
@@ -1,7 +1,6 @@
 name: pilot-development
 
 channels:
-  - diracgrid
   - conda-forge
   - defaults