diff --git a/docs/releases/changelog.md b/docs/releases/changelog.md
index db5a93de28..dd7382798d 100644
--- a/docs/releases/changelog.md
+++ b/docs/releases/changelog.md
@@ -11,6 +11,23 @@ It pulls in the latest version of upstream libc++ and marks the beginning of
 
 !-->
 
+## libcu++ 1.5.0 (CUDA Toolkit 11.4)
+
+libcu++ 1.6.0 is a major release.
+
+Supported ABI Versions: 3 (default) and 2.
+
+Included in: CUDA Toolkit 11.4.
+
+### New Features
+
+<!--
+- `cuda::annotated_ptr`...
+!-->
+
+### Issues Fixed
+
+
 ## libcu++ 1.5.0 (CUDA Toolkit 11.4)
 
 libcu++ 1.5.0 is a major release.  It adds `<nv/target>`, 
diff --git a/include/cuda/std/detail/__config b/include/cuda/std/detail/__config
index 48da611fd7..5482f4912b 100644
--- a/include/cuda/std/detail/__config
+++ b/include/cuda/std/detail/__config
@@ -93,7 +93,7 @@
 #  define _LIBCUDACXX_ABI_UNSTABLE
 #endif
 
-#define _LIBCUDACXX_CUDA_API_VERSION 001005000
+#define _LIBCUDACXX_CUDA_API_VERSION 001006000
 
 #define _LIBCUDACXX_CUDA_API_VERSION_MAJOR \
   (_LIBCUDACXX_CUDA_API_VERSION / 1000000)