diff --git a/Verovio.xcodeproj/project.pbxproj b/Verovio.xcodeproj/project.pbxproj
index 111c13c9f03..d5ec055fae2 100644
--- a/Verovio.xcodeproj/project.pbxproj
+++ b/Verovio.xcodeproj/project.pbxproj
@@ -5191,7 +5191,7 @@
 			buildSettings = {
 				CLANG_ANALYZER_NONNULL = YES;
 				CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
-				CLANG_CXX_LANGUAGE_STANDARD = "c++17";
+				CLANG_CXX_LANGUAGE_STANDARD = "c++20";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_WEAK = YES;
 				CLANG_WARN_COMMA = YES;
@@ -5246,7 +5246,7 @@
 			buildSettings = {
 				CLANG_ANALYZER_NONNULL = YES;
 				CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
-				CLANG_CXX_LANGUAGE_STANDARD = "c++17";
+				CLANG_CXX_LANGUAGE_STANDARD = "c++20";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_WEAK = YES;
 				CLANG_WARN_COMMA = YES;
diff --git a/bindings/iOS/all.h b/bindings/iOS/all.h
index 9c77adf6e96..9698250ef2e 100644
--- a/bindings/iOS/all.h
+++ b/bindings/iOS/all.h
@@ -94,6 +94,7 @@
 #import <VerovioFramework/expansionmap.h>
 #import <VerovioFramework/f.h>
 #import <VerovioFramework/facsimile.h>
+#import <VerovioFramework/facsimilefunctor.h>
 #import <VerovioFramework/facsimileinterface.h>
 #import <VerovioFramework/fb.h>
 #import <VerovioFramework/featureextractor.h>