diff --git a/libstdc++-v3/include/bits/version.def b/libstdc++-v3/include/bits/version.def
index cfb90533ce4..65a1d6d2660 100644
--- a/libstdc++-v3/include/bits/version.def
+++ b/libstdc++-v3/include/bits/version.def
@@ -2351,6 +2351,21 @@ ftms = {
   };
 };
 
+ftms = {
+  name = replaceable_contract_violation_handler;
+  values = {
+    v = 202603;
+    cxxmin = 26;
+    extra_cond = "__cpp_contracts >= 202502L "
+    "&& __ELF__";
+  };
+  values = {
+    v = 0;
+    cxxmin = 26;
+    extra_cond = "__cpp_contracts >= 202502L";
+  };
+};
+
 ftms = {
   name = simd;
   values = {
diff --git a/libstdc++-v3/include/bits/version.h b/libstdc++-v3/include/bits/version.h
index 22dd31b9d32..4059a8a767b 100644
--- a/libstdc++-v3/include/bits/version.h
+++ b/libstdc++-v3/include/bits/version.h
@@ -2626,6 +2626,21 @@
 #endif /* !defined(__cpp_lib_contracts) */
 #undef __glibcxx_want_contracts
 
+#if !defined(__cpp_lib_replaceable_contract_violation_handler)
+# if (__cplusplus >  202302L) && (__cpp_contracts >= 202502L && __ELF__)
+#  define __glibcxx_replaceable_contract_violation_handler 202603L
+#  if defined(__glibcxx_want_all) || defined(__glibcxx_want_replaceable_contract_violation_handler)
+#   define __cpp_lib_replaceable_contract_violation_handler 202603L
+#  endif
+# elif (__cplusplus >  202302L) && (__cpp_contracts >= 202502L)
+#  define __glibcxx_replaceable_contract_violation_handler 0L
+#  if defined(__glibcxx_want_all) || defined(__glibcxx_want_replaceable_contract_violation_handler)
+#   define __cpp_lib_replaceable_contract_violation_handler 0L
+#  endif
+# endif
+#endif /* !defined(__cpp_lib_replaceable_contract_violation_handler) */
+#undef __glibcxx_want_replaceable_contract_violation_handler
+
 #if !defined(__cpp_lib_simd)
 # if (__cplusplus >  202302L) && _GLIBCXX_HOSTED && (__cpp_structured_bindings >= 202411L && __cpp_expansion_statements >= 202411L && __SSE2__)
 #  define __glibcxx_simd 202506L
diff --git a/libstdc++-v3/include/std/contracts b/libstdc++-v3/include/std/contracts
index c1fe54750af..a0575fbefd9 100644
--- a/libstdc++-v3/include/std/contracts
+++ b/libstdc++-v3/include/std/contracts
@@ -33,6 +33,7 @@
 #pragma GCC system_header
 
 #define __glibcxx_want_contracts
+#define __glibcxx_want_replaceable_contract_violation_handler
 #include <bits/version.h>
 
 #ifdef __cpp_lib_contracts