diff --git a/.ci_support/osx_64_.yaml b/.ci_support/osx_64_.yaml
index 7d6dd51e..17afc491 100644
--- a/.ci_support/osx_64_.yaml
+++ b/.ci_support/osx_64_.yaml
@@ -1,5 +1,7 @@
 MACOSX_DEPLOYMENT_TARGET:
-- '10.9'
+- '10.13'
+MACOSX_SDK_VERSION:
+- '10.13'
 c_compiler:
 - clang
 c_compiler_version:
@@ -7,7 +9,7 @@ c_compiler_version:
 c_stdlib:
 - macosx_deployment_target
 c_stdlib_version:
-- '10.9'
+- '10.13'
 channel_sources:
 - rapidsai,rapidsai-nightly,conda-forge
 channel_targets:
diff --git a/.ci_support/osx_arm64_.yaml b/.ci_support/osx_arm64_.yaml
index 15dd9236..20802e40 100644
--- a/.ci_support/osx_arm64_.yaml
+++ b/.ci_support/osx_arm64_.yaml
@@ -1,5 +1,7 @@
 MACOSX_DEPLOYMENT_TARGET:
 - '11.0'
+MACOSX_SDK_VERSION:
+- '11.0'
 c_compiler:
 - clang
 c_compiler_version:
diff --git a/.gitattributes b/.gitattributes
index 7f327638..18f114a1 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -20,8 +20,8 @@ bld.bat text eol=crlf
 .travis.yml linguist-generated=true
 .scripts/* linguist-generated=true
 .woodpecker.yml linguist-generated=true
-LICENSE.txt linguist-generated=true
-README.md linguist-generated=true
+/LICENSE.txt linguist-generated=true
+/README.md linguist-generated=true
 azure-pipelines.yml linguist-generated=true
 build-locally.py linguist-generated=true
 shippable.yml linguist-generated=true