diff --git a/example/ios/Podfile b/example/ios/Podfile
index c04206ab..fd1bccfd 100644
--- a/example/ios/Podfile
+++ b/example/ios/Podfile
@@ -33,5 +33,20 @@ target 'RiveExample' do
       :mac_catalyst_enabled => false,
       # :ccache_enabled => true
     )
+
+    # fmt `consteval` build error on Xcode 26.4+ (Apple clang 21): fmt's compile-time
+    # FMT_STRING (basic_format_string's consteval ctor) is rejected as a non-constant
+    # expression. Compile only the `fmt` pod as C++17 so fmt's own base.h disables consteval:
+    # with FMT_CPLUSPLUS < 201709 it hits `#define FMT_USE_CONSTEVAL 0` before the
+    # `__cpp_consteval` branch. NOTE: a plain `-DFMT_USE_CONSTEVAL=0` define does NOT work —
+    # base.h re-#defines FMT_USE_CONSTEVAL unconditionally (it is not #ifndef-guarded), so it
+    # overrides any command-line define. Verified on Xcode 26.6. Real fix is upstream in
+    # React Native 0.83+ (fmtlib/fmt#4740, facebook/react-native#55601); remove once we bump.
+    installer.pods_project.targets.each do |target|
+      next unless target.name == 'fmt'
+      target.build_configurations.each do |bc|
+        bc.build_settings['CLANG_CXX_LANGUAGE_STANDARD'] = 'c++17'
+      end
+    end
   end
 end