diff --git a/node_modules/react-native/third-party-podspecs/fmt.podspec b/node_modules/react-native/third-party-podspecs/fmt.podspec
index 2f38990..9b02e48 100644
--- a/node_modules/react-native/third-party-podspecs/fmt.podspec
+++ b/node_modules/react-native/third-party-podspecs/fmt.podspec
@@ -26,4 +26,11 @@ Pod::Spec.new do |spec|
   spec.public_header_files = "include/fmt/*.h"
   spec.header_mappings_dir = "include"
   spec.source_files = ["include/fmt/*.h", "src/format.cc"]
+
+  # TODO: Remove after upgrading React Native past 0.83.x
+  # Fix fmt 11.0.2 consteval build error with Xcode 26.4 (facebook/react-native#55601)
+  # Fixed in RN 0.84+ which bumps fmt to a compatible version.
+  spec.prepare_command = <<~SCRIPT
+    perl -i -pe 's/^#  define FMT_USE_CONSTEVAL 1$/#  define FMT_USE_CONSTEVAL 0/' include/fmt/base.h
+  SCRIPT
 end