diff --git a/CHANGELOG.md b/CHANGELOG.md
index a064e26e..5176ac83 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,10 @@ a major and minor version only.
 
 ## [Unreleased]
 
+### Fixed
+
+- redefine `\hyper@natlinkbreak` to avoid problems with natbib, see https://tug.org/pipermail/tex-live/2026-March/052345.html 
+
 ## [v3.77]
 
 ### NEW
diff --git a/base/beamerbasecompatibility.sty b/base/beamerbasecompatibility.sty
index 0494ef96..71fde3b6 100644
--- a/base/beamerbasecompatibility.sty
+++ b/base/beamerbasecompatibility.sty
@@ -40,6 +40,7 @@
   \def\hyper@nat@current{#1}%
 }
 \def\hyper@natlinkend{\hyper@linkend}
+\def\hyper@natlinkbreak#1#2{#1}
 
 \mode
 <all>