diff --git a/src/if_ruby.c b/src/if_ruby.c
index a921205..7fab211 100644
--- a/src/if_ruby.c
+++ b/src/if_ruby.c
@@ -83,7 +83,7 @@
 #  define rb_gc_writebarrier_unprotect	rb_gc_writebarrier_unprotect_stub
 # endif
 
-# if RUBY_VERSION >= 26
+# if RUBY_VERSION >= 26 && RUBY_VERSION <= 32
 #  define rb_ary_detransient	rb_ary_detransient_stub
 # endif
 
@@ -456,7 +456,7 @@
 static VALUE (*dll_rb_ary_new) (void);
 static VALUE (*dll_rb_ary_new4) (long n, const VALUE *elts);
 static VALUE (*dll_rb_ary_push) (VALUE, VALUE);
-# if RUBY_VERSION >= 26
+# if RUBY_VERSION >= 26 && RUBY_VERSION <= 32
 static void (*dll_rb_ary_detransient) (VALUE);
 # endif
 # ifdef __ia64
@@ -491,7 +491,7 @@
 #  endif
 # endif
 
-# if RUBY_VERSION >= 26
+# if RUBY_VERSION >= 26 && RUBY_VERSION <= 32
 void rb_ary_detransient_stub(VALUE x);
 # endif
 
@@ -561,7 +561,7 @@
 }
 #   endif
 #  endif
-#  if RUBY_VERSION >= 26
+#  if RUBY_VERSION >= 26 && RUBY_VERSION <= 32
     void
 rb_ary_detransient_stub(VALUE x)
 {
@@ -718,7 +718,7 @@
     {"rb_ary_new4", (RUBY_PROC*)&dll_rb_ary_new4},
 # endif
     {"rb_ary_push", (RUBY_PROC*)&dll_rb_ary_push},
-# if RUBY_VERSION >= 26
+# if RUBY_VERSION >= 26 && RUBY_VERSION <= 32
     {"rb_ary_detransient", (RUBY_PROC*)&dll_rb_ary_detransient},
 # endif
     {"rb_int2big", (RUBY_PROC*)&dll_rb_int2big},