diff --git a/ports/ace/CONTROL b/ports/ace/CONTROL
index e32e827b34..80af89d8a8 100644
--- a/ports/ace/CONTROL
+++ b/ports/ace/CONTROL
@@ -1,3 +1,3 @@
 Source: ace
-Version: 6.4.4
+Version: 6.4.5
 Description: The ADAPTIVE Communication Environment
diff --git a/ports/ace/portfile.cmake b/ports/ace/portfile.cmake
index 6763cc370b..fece3ebcc8 100644
--- a/ports/ace/portfile.cmake
+++ b/ports/ace/portfile.cmake
@@ -5,9 +5,9 @@ endif()
 include(vcpkg_common_functions)
 set(SOURCE_PATH ${CURRENT_BUILDTREES_DIR}/src/ACE_wrappers/ace)
 vcpkg_download_distfile(ARCHIVE
-    URLS "http://download.dre.vanderbilt.edu/previous_versions/ACE-6.4.4.zip"
-    FILENAME "ACE-6.4.4.zip"
-    SHA512 82628a73b736a14b3ee33fb859e26370ffd7df88bda4890fe490736160d3ce393f7e61183cd8cd7a91a83bc31c4bd263aa887168543f9f89fde080dc3650a4ed
+    URLS "http://download.dre.vanderbilt.edu/previous_versions/ACE-6.4.5.zip"
+    FILENAME "ACE-6.4.5.zip"
+    SHA512 cce1681fc35efdefb8b88a49b743ffcaecfe8f146dcf6c78393aed29c8853e77b062bced4a2fb457eba74bf5834511611cc40da2320c6094793cb8c2b6df3d2a
 )
 vcpkg_extract_source_archive(${ARCHIVE})