diff --git a/src/Make_cyg_ming.mak b/src/Make_cyg_ming.mak
index 7b9c7454e9..ca0fa97a3c 100644
--- a/src/Make_cyg_ming.mak
+++ b/src/Make_cyg_ming.mak
@@ -475,9 +475,10 @@ ifeq (19, $(word 1,$(sort 19 $(RUBY_VER))))
 RUBY_19_OR_LATER = 1
 endif
 
-RUBYINC = -I $(RUBY)/lib/ruby/$(RUBY_API_VER_LONG)/$(RUBY_PLATFORM)
 ifdef RUBY_19_OR_LATER
-RUBYINC += -I $(RUBY)/include/ruby-$(RUBY_API_VER_LONG) -I $(RUBY)/include/ruby-$(RUBY_API_VER_LONG)/$(RUBY_PLATFORM)
+RUBYINC = -I $(RUBY)/include/ruby-$(RUBY_API_VER_LONG) -I $(RUBY)/include/ruby-$(RUBY_API_VER_LONG)/$(RUBY_PLATFORM)
+else
+RUBYINC = -I $(RUBY)/lib/ruby/$(RUBY_API_VER_LONG)/$(RUBY_PLATFORM)
 endif
 ifeq (no, $(DYNAMIC_RUBY))
 RUBYLIB = -L$(RUBY)/lib -l$(RUBY_INSTALL_NAME)
diff --git a/src/Make_mvc.mak b/src/Make_mvc.mak
index 919f0f041b..1a3978c0e7 100644
--- a/src/Make_mvc.mak
+++ b/src/Make_mvc.mak
@@ -1136,7 +1136,7 @@ RUBY_INSTALL_NAME = mswin32-ruby$(RUBY_API_VER)
 CFLAGS = $(CFLAGS) -DFEAT_RUBY
 RUBY_OBJ = $(OUTDIR)\if_ruby.obj
 !if $(RUBY_VER) >= 19
-RUBY_INC = /I "$(RUBY)\lib\ruby\$(RUBY_API_VER_LONG)\$(RUBY_PLATFORM)" /I "$(RUBY)\include\ruby-$(RUBY_API_VER_LONG)" /I "$(RUBY)\include\ruby-$(RUBY_API_VER_LONG)\$(RUBY_PLATFORM)"
+RUBY_INC = /I "$(RUBY)\include\ruby-$(RUBY_API_VER_LONG)" /I "$(RUBY)\include\ruby-$(RUBY_API_VER_LONG)\$(RUBY_PLATFORM)"
 !else
 RUBY_INC = /I "$(RUBY)\lib\ruby\$(RUBY_API_VER_LONG)\$(RUBY_PLATFORM)"
 !endif
diff --git a/src/version.c b/src/version.c
index 992ed7ffd5..c541dc9a15 100644
--- a/src/version.c
+++ b/src/version.c
@@ -794,6 +794,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    421,
 /**/
     420,
 /**/