diff --git a/include/rmm/mr/device/arena_memory_resource.hpp b/include/rmm/mr/device/arena_memory_resource.hpp
index c9954a507..d0a19da76 100644
--- a/include/rmm/mr/device/arena_memory_resource.hpp
+++ b/include/rmm/mr/device/arena_memory_resource.hpp
@@ -23,7 +23,7 @@
 #include <cuda_runtime_api.h>
 
 #include <spdlog/common.h>
-#include <spdlog/fmt/bundled/ostream.h>
+#include <spdlog/fmt/ostr.h>
 
 #include <cstddef>
 #include <map>
diff --git a/include/rmm/mr/device/detail/arena.hpp b/include/rmm/mr/device/detail/arena.hpp
index 0d2bb319a..44ae8f88e 100644
--- a/include/rmm/mr/device/detail/arena.hpp
+++ b/include/rmm/mr/device/detail/arena.hpp
@@ -24,7 +24,7 @@
 #include <cuda_runtime_api.h>
 
 #include <spdlog/common.h>
-#include <spdlog/fmt/bundled/ostream.h>
+#include <spdlog/fmt/ostr.h>
 
 #include <algorithm>
 #include <cstddef>