diff --git a/continuous_integration/condarc b/continuous_integration/condarc
index 258ac5fa5d..ee8a8d2539 100644
--- a/continuous_integration/condarc
+++ b/continuous_integration/condarc
@@ -1,6 +1,5 @@
 channels:
   - conda-forge
-  - defaults
 channel_priority: true
 auto_activate_base: false
 remote_backoff_factor: 20
diff --git a/continuous_integration/environment-3.10.yaml b/continuous_integration/environment-3.10.yaml
index a3209963dc..b30c76e740 100644
--- a/continuous_integration/environment-3.10.yaml
+++ b/continuous_integration/environment-3.10.yaml
@@ -1,7 +1,6 @@
 name: dask-distributed
 channels:
   - conda-forge
-  - defaults
 dependencies:
   - python=3.10
   - packaging
diff --git a/continuous_integration/environment-3.11.yaml b/continuous_integration/environment-3.11.yaml
index dfc2a56be7..994b70a3e9 100644
--- a/continuous_integration/environment-3.11.yaml
+++ b/continuous_integration/environment-3.11.yaml
@@ -1,7 +1,6 @@
 name: dask-distributed
 channels:
   - conda-forge
-  - defaults
 dependencies:
   - python=3.11
   - packaging
diff --git a/continuous_integration/environment-3.12.yaml b/continuous_integration/environment-3.12.yaml
index 39a313d5ef..bc2213bc85 100644
--- a/continuous_integration/environment-3.12.yaml
+++ b/continuous_integration/environment-3.12.yaml
@@ -1,7 +1,6 @@
 name: dask-distributed
 channels:
   - conda-forge
-  - defaults
 dependencies:
   - python=3.12
   - packaging