diff --git a/zlib-ada.spec b/zlib-ada.spec
index d8c3a6d..92c3c4d 100644
--- a/zlib-ada.spec
+++ b/zlib-ada.spec
@@ -10,7 +10,7 @@
 
 Name:           zlib-ada
 Version:        %{upstream_version}
-Release:        0.42.%{upstream_commit_date}git%{upstream_shortcommit}%{?dist}
+Release:        0.43.%{upstream_commit_date}git%{upstream_shortcommit}%{?dist}
 Summary:        Zlib for Ada
 Summary(sv):    Zlib för ada
 
@@ -169,6 +169,9 @@ gnatmake mtest.adb -largs -lz && ./mtest
 ###############
 
 %changelog
+* Wed Jan 07 2026 Björn Persson <Bjorn@Rombobjörn.se> - 1.4-0.43.20210811gitca39312
+- Rebuilt with GCC 16 prerelease.
+
 * Sun Aug 10 2025 Björn Persson <Bjorn@Rombobjörn.se> - 1.4-0.42.20210811gitca39312
 - Rebuilt because the ALI of System.OS_Constants changed.