diff --git a/cpp/CMakeLists.txt b/cpp/CMakeLists.txt
index ae0b524689f..5db9a939945 100644
--- a/cpp/CMakeLists.txt
+++ b/cpp/CMakeLists.txt
@@ -19,7 +19,7 @@ include(FetchContent)
 FetchContent_Declare(
   rapids-cmake
   GIT_REPOSITORY https://github.com/rapidsai/rapids-cmake.git
-  GIT_TAG        origin/branch-21.06
+  GIT_TAG        origin/branch-21.08
   )
 FetchContent_MakeAvailable(rapids-cmake)