diff --git a/src/supplemental/idhash/idhash.h b/include/nng/supplemental/util/idhash.h
similarity index 100%
rename from src/supplemental/idhash/idhash.h
rename to include/nng/supplemental/util/idhash.h
diff --git a/src/supplemental/idhash/CMakeLists.txt b/src/supplemental/idhash/CMakeLists.txt
deleted file mode 100644
index 3a9bbb0bd..000000000
--- a/src/supplemental/idhash/CMakeLists.txt
+++ /dev/null
@@ -1,11 +0,0 @@
-#
-# Copyright 2023 Staysail Systems, Inc. <info@staysail.tech>
-#
-# This software is supplied under the terms of the MIT License, a
-# copy of which should be located in the distribution where this
-# file was obtained (LICENSE.txt).  A copy of the license may also be
-# found online at https://opensource.org/licenses/MIT.
-#
-
-nng_sources_if(NNG_SUPP_IDHASH idhash.c idhash.h)
-nng_test_if(NNG_SUPP_IDHASH idhash_test)
diff --git a/src/supplemental/idhash/idhash.c b/src/supplemental/util/idhash.c
similarity index 100%
rename from src/supplemental/idhash/idhash.c
rename to src/supplemental/util/idhash.c
diff --git a/src/supplemental/idhash/idhash_test.c b/src/supplemental/util/idhash_test.c
similarity index 100%
rename from src/supplemental/idhash/idhash_test.c
rename to src/supplemental/util/idhash_test.c