diff --git a/ci/requirements/py-base.yml b/ci/requirements/py-base.yml
index ba61c7e4..97220f81 100644
--- a/ci/requirements/py-base.yml
+++ b/ci/requirements/py-base.yml
@@ -1,5 +1,4 @@
 channels:
-  - defaults
   - conda-forge
 dependencies:
   - autoray>=0.6.12
diff --git a/ci/requirements/py-jax.yml b/ci/requirements/py-jax.yml
index 17f7f550..a72d16f9 100644
--- a/ci/requirements/py-jax.yml
+++ b/ci/requirements/py-jax.yml
@@ -1,5 +1,4 @@
 channels:
-  - defaults
   - conda-forge
 dependencies:
   - autoray>=0.6.12
diff --git a/ci/requirements/py-openblas.yml b/ci/requirements/py-openblas.yml
index dcbe6ccb..f27730cc 100644
--- a/ci/requirements/py-openblas.yml
+++ b/ci/requirements/py-openblas.yml
@@ -1,5 +1,4 @@
 channels:
-  - defaults
   - conda-forge
 dependencies:
   - autoray>=0.6.12
diff --git a/ci/requirements/py-slepc.yml b/ci/requirements/py-slepc.yml
index 5e191615..82b183db 100644
--- a/ci/requirements/py-slepc.yml
+++ b/ci/requirements/py-slepc.yml
@@ -1,6 +1,5 @@
 channels:
   - conda-forge
-  - defaults
 dependencies:
   - autoray>=0.6.12
   - cotengra>=0.6.1
diff --git a/ci/requirements/py-tensorflow.yml b/ci/requirements/py-tensorflow.yml
index 42c2a517..1a374f8a 100644
--- a/ci/requirements/py-tensorflow.yml
+++ b/ci/requirements/py-tensorflow.yml
@@ -1,5 +1,4 @@
 channels:
-  - defaults
   - conda-forge
 dependencies:
   - autoray>=0.7.0
diff --git a/ci/requirements/py-torch.yml b/ci/requirements/py-torch.yml
index 9597209f..19a0437f 100644
--- a/ci/requirements/py-torch.yml
+++ b/ci/requirements/py-torch.yml
@@ -1,6 +1,5 @@
 channels:
   - pytorch
-  - defaults
   - conda-forge
 dependencies:
   - autoray>=0.6.12