diff --git a/CHANGELOG.md b/CHANGELOG.md
index 073864180af..88c9032db6d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,7 @@
 - PR #6015 Upgrade CUB/Thrust to the latest commit
 - PR #5971 Add cuStreamz README for basic installation and use
 - PR #6024 Expose selecting multiple ORC stripes to read from Python
+- PR #6155 Use the CUB submodule in Thrust instead of fetching CUB separately
 - PR #6002 Add Java bindings for md5
 - PR #6067 Added compute codes for aarch64 devices
 - PR #6083 Small cleanup
diff --git a/cpp/CMakeLists.txt b/cpp/CMakeLists.txt
index a7799bdfa26..210bb477ae5 100644
--- a/cpp/CMakeLists.txt
+++ b/cpp/CMakeLists.txt
@@ -376,8 +376,7 @@ message(STATUS "BENCHMARK_LIST set to: ${BENCHMARK_LIST}")
 ###################################################################################################
 # - include paths ---------------------------------------------------------------------------------
 
-include_directories("${CUB_INCLUDE_DIR}"
-                    "${THRUST_INCLUDE_DIR}"
+include_directories("${THRUST_INCLUDE_DIR}"
                     "${JITIFY_INCLUDE_DIR}"
                     "${LIBCUDACXX_INCLUDE_DIR}")
 
diff --git a/cpp/benchmarks/CMakeLists.txt b/cpp/benchmarks/CMakeLists.txt
index 502cf3b782d..07d2f60fe9c 100644
--- a/cpp/benchmarks/CMakeLists.txt
+++ b/cpp/benchmarks/CMakeLists.txt
@@ -22,8 +22,7 @@ endfunction(ConfigureBench)
 ###################################################################################################
 # - include paths ---------------------------------------------------------------------------------
 
-include_directories("${CUB_INCLUDE_DIR}"
-                    "${THRUST_INCLUDE_DIR}"
+include_directories("${THRUST_INCLUDE_DIR}"
                     "${JITIFY_INCLUDE_DIR}"
                     "${LIBCUDACXX_INCLUDE_DIR}")
 
diff --git a/cpp/tests/CMakeLists.txt b/cpp/tests/CMakeLists.txt
index c5b02b3a189..d703f4bcde9 100644
--- a/cpp/tests/CMakeLists.txt
+++ b/cpp/tests/CMakeLists.txt
@@ -58,8 +58,7 @@ endfunction(ConfigureTest)
 ###################################################################################################
 # - include paths ---------------------------------------------------------------------------------
 
-include_directories("${CUB_INCLUDE_DIR}"
-                    "${THRUST_INCLUDE_DIR}"
+include_directories("${THRUST_INCLUDE_DIR}"
                     "${JITIFY_INCLUDE_DIR}"
                     "${LIBCUDACXX_INCLUDE_DIR}")
 
diff --git a/thirdparty/CMakeLists.txt b/thirdparty/CMakeLists.txt
index b7a57a557ff..f8f3457e84f 100644
--- a/thirdparty/CMakeLists.txt
+++ b/thirdparty/CMakeLists.txt
@@ -1,26 +1,7 @@
 include(FetchContent)
 
 ###################################################################################################
-# - cub -------------------------------------------------------------------------------------------
-
-message("Fetching CUB")
-
-FetchContent_Declare(
-    cub
-    GIT_REPOSITORY https://github.com/thrust/cub.git
-    # August 28, 2020
-    GIT_TAG        2442f44532ffcc53298c7e3a298feb5134563860
-)
-
-FetchContent_GetProperties(cub)
-if(NOT cub_POPULATED)
-  FetchContent_Populate(cub)
-  # We are not using the cub CMake targets, so no need to call `add_subdirectory()`.
-endif()
-set(CUB_INCLUDE_DIR "${cub_SOURCE_DIR}" PARENT_SCOPE)
-
-###################################################################################################
-# - thrust ----------------------------------------------------------------------------------------
+# - thrust/cub ------------------------------------------------------------------------------------
 
 message("Fetching Thrust")