diff --git a/conda/environments/rmm_dev_cuda10.1.yml b/conda/environments/rmm_dev_cuda10.1.yml
index f5186ea9e..caccd9541 100644
--- a/conda/environments/rmm_dev_cuda10.1.yml
+++ b/conda/environments/rmm_dev_cuda10.1.yml
@@ -3,8 +3,8 @@ channels:
 - rapidsai
 - conda-forge
 dependencies:
-- clang=11.0.0
-- clang-tools=11.0.0
+- clang=11.1.0
+- clang-tools=11.1.0
 - cmake>=3.20.1
 - cmake-format=0.6.11
 - flake8=3.8.3
diff --git a/conda/environments/rmm_dev_cuda10.2.yml b/conda/environments/rmm_dev_cuda10.2.yml
index a96a88889..348418014 100644
--- a/conda/environments/rmm_dev_cuda10.2.yml
+++ b/conda/environments/rmm_dev_cuda10.2.yml
@@ -3,8 +3,8 @@ channels:
 - rapidsai
 - conda-forge
 dependencies:
-- clang=11.0.0
-- clang-tools=11.0.0
+- clang=11.1.0
+- clang-tools=11.1.0
 - cmake>=3.20.1
 - cmake-format=0.6.11
 - flake8=3.8.3
diff --git a/conda/environments/rmm_dev_cuda11.0.yml b/conda/environments/rmm_dev_cuda11.0.yml
index 605f9d7f1..8fbe42e4b 100644
--- a/conda/environments/rmm_dev_cuda11.0.yml
+++ b/conda/environments/rmm_dev_cuda11.0.yml
@@ -3,8 +3,8 @@ channels:
 - rapidsai
 - conda-forge
 dependencies:
-- clang=11.0.0
-- clang-tools=11.0.0
+- clang=11.1.0
+- clang-tools=11.1.0
 - cmake>=3.20.1
 - cmake-format=0.6.11
 - flake8=3.8.3
diff --git a/scripts/run-clang-format.py b/scripts/run-clang-format.py
index 5014e0bca..6c4370742 100755
--- a/scripts/run-clang-format.py
+++ b/scripts/run-clang-format.py
@@ -22,7 +22,7 @@
 import sys
 import tempfile
 
-EXPECTED_VERSION = "11.0.0"
+EXPECTED_VERSION = "11.1.0"
 VERSION_REGEX = re.compile(r"clang-format version ([0-9.]+)")
 # NOTE: populate this list with more top-level dirs as we add more of them
 # to the rmm repo