diff --git a/.circleci/config.yml b/.circleci/config.yml
index 5a9ca3ef1b..b2824bbd21 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -36,9 +36,6 @@ commands:
           name: Adding CONDA_CHANNEL_FLAGS to BASH_ENV
           command: |
               CONDA_CHANNEL_FLAGS=""
-              if [[ "${PYTHON_VERSION}" = *3.9* ]]; then
-                echo "export CONDA_CHANNEL_FLAGS=-c=conda-forge" >> ${BASH_ENV}
-              fi
   generate_cachekey:
     description: "Generate .cachekey file that changes on daily basis"
     steps:
diff --git a/.circleci/config.yml.in b/.circleci/config.yml.in
index 5473c45f65..bb516c6eb0 100644
--- a/.circleci/config.yml.in
+++ b/.circleci/config.yml.in
@@ -36,9 +36,6 @@ commands:
           name: Adding CONDA_CHANNEL_FLAGS to BASH_ENV
           command: |
               CONDA_CHANNEL_FLAGS=""
-              if [[ "${PYTHON_VERSION}" = *3.9* ]]; then
-                echo "export CONDA_CHANNEL_FLAGS=-c=conda-forge" >> ${BASH_ENV}
-              fi
   generate_cachekey:
     description: "Generate .cachekey file that changes on daily basis"
     steps:
diff --git a/.circleci/unittest/linux/scripts/environment.yml b/.circleci/unittest/linux/scripts/environment.yml
index 73c1cc9e15..dbf84c006e 100644
--- a/.circleci/unittest/linux/scripts/environment.yml
+++ b/.circleci/unittest/linux/scripts/environment.yml
@@ -1,6 +1,5 @@
 channels:
   - defaults
-  - conda-forge
 dependencies:
   - flake8>=3.7.9
   - codecov
diff --git a/.circleci/unittest/windows/scripts/environment.yml b/.circleci/unittest/windows/scripts/environment.yml
index 04142428c2..21833a0c52 100644
--- a/.circleci/unittest/windows/scripts/environment.yml
+++ b/.circleci/unittest/windows/scripts/environment.yml
@@ -1,6 +1,5 @@
 channels:
   - defaults
-  - conda-forge
 dependencies:
   - flake8>=3.7.9
   - codecov