diff --git a/devel/rubygem-iobuffer/files/patch-ext_extconf.rb b/devel/rubygem-iobuffer/files/patch-ext_extconf.rb
new file mode 100644
index 000000000000..d16f33859799
--- /dev/null
+++ b/devel/rubygem-iobuffer/files/patch-ext_extconf.rb
@@ -0,0 +1,13 @@
+--- ext/extconf.rb.orig	2022-03-10 08:57:25 UTC
++++ ext/extconf.rb
+@@ -2,8 +2,8 @@ require 'mkmf'
+ 
+ dir_config("iobuffer")
+ have_library("c", "main")
+-if have_macro("HAVE_RB_IO_T", "rubyio.h")
+-  have_struct_member("rb_io_t", "fd", "rubyio.h")
++if have_macro("HAVE_RB_IO_T", "ruby/io.h")
++  have_struct_member("rb_io_t", "fd", "ruby/io.h")
+ end
+ 
+ create_makefile("iobuffer_ext")
diff --git a/devel/rubygem-iobuffer/files/patch-ext_iobuffer.c b/devel/rubygem-iobuffer/files/patch-ext_iobuffer.c
new file mode 100644
index 000000000000..4253b2675686
--- /dev/null
+++ b/devel/rubygem-iobuffer/files/patch-ext_iobuffer.c
@@ -0,0 +1,11 @@
+--- ext/iobuffer.c.orig	2022-03-10 08:57:25 UTC
++++ ext/iobuffer.c
+@@ -5,7 +5,7 @@
+  */
+ 
+ #include "ruby.h"
+-#include "rubyio.h"
++#include "ruby/io.h"
+ 
+ #include <assert.h>
+