diff --git a/env/cpu/py3-master.yml b/env/cpu/py3-master.yml
index d0d3829fac..41157a19f8 100644
--- a/env/cpu/py3-master.yml
+++ b/env/cpu/py3-master.yml
@@ -15,7 +15,4 @@ dependencies:
   - mypy>=0.630
   - black>=18
   - setuptools>=40.1
-  - pydantic
   - requests
-  - pip:
-    - mxnet-mkl>=1.3.1,<1.5.*
diff --git a/env/cpu/py3.yml b/env/cpu/py3.yml
index 43a5b6c896..0da1782235 100644
--- a/env/cpu/py3.yml
+++ b/env/cpu/py3.yml
@@ -24,10 +24,8 @@ dependencies:
   - mypy>=0.630
   - black>=18
   - setuptools>=40.1
-  - pydantic
   - requests
   - pip:
-    - mxnet-mkl>=1.3.1,<1.5.*
     - https://github.com/mli/mx-theme/archive/0.3.1.tar.gz
     - seaborn
     - sphinx-autorun
diff --git a/env/gpu/py3-master.yml b/env/gpu/py3-master.yml
index 49358b43a3..e97459fc44 100644
--- a/env/gpu/py3-master.yml
+++ b/env/gpu/py3-master.yml
@@ -24,10 +24,9 @@ dependencies:
   - mypy>=0.630
   - black>=18
   - setuptools>=40.1
-  - pydantic
   - requests
   - pip:
-    - mxnet-cu92mkl>=1.3.1,<1.5.*
+    - mxnet-cu92mkl>=1.3.1
     - https://github.com/mli/mx-theme/archive/0.3.1.tar.gz
     - seaborn
     - sphinx-autorun
diff --git a/env/gpu/py3.yml b/env/gpu/py3.yml
index 49358b43a3..e97459fc44 100644
--- a/env/gpu/py3.yml
+++ b/env/gpu/py3.yml
@@ -24,10 +24,9 @@ dependencies:
   - mypy>=0.630
   - black>=18
   - setuptools>=40.1
-  - pydantic
   - requests
   - pip:
-    - mxnet-cu92mkl>=1.3.1,<1.5.*
+    - mxnet-cu92mkl>=1.3.1
     - https://github.com/mli/mx-theme/archive/0.3.1.tar.gz
     - seaborn
     - sphinx-autorun