diff --git a/src/testdir/test_filetype.vim b/src/testdir/test_filetype.vim
index 2b7b797..4be8cdc 100644
--- a/src/testdir/test_filetype.vim
+++ b/src/testdir/test_filetype.vim
@@ -83,6 +83,7 @@
     \ 'bib': ['file.bib'],
     \ 'bicep': ['file.bicep'],
     \ 'bindzone': ['named.root', '/bind/db.file', '/named/db.file', 'any/bind/db.file', 'any/named/db.file'],
+    \ 'bitbake': ['file.bb', 'file.bbappend', 'file.bbclass', 'build/conf/local.conf', 'meta/conf/layer.conf', 'build/conf/bbappend.conf', 'meta-layer/conf/distro/foo.conf'],
     \ 'blank': ['file.bl'],
     \ 'bsdl': ['file.bsd', 'file.bsdl', 'bsd', 'some-bsd'],
     \ 'bst': ['file.bst'],
@@ -1816,5 +1817,58 @@
   filetype off
 endfunc
 
+func Test_inc_file()
+  filetype on
+
+  call writefile(['this is the fallback'], 'Xfile.inc')
+  split Xfile.inc
+  call assert_equal('pov', &filetype)
+  bwipe!
+
+  let g:filetype_inc = 'foo'
+  split Xfile.inc
+  call assert_equal('foo', &filetype)
+  bwipe!
+  unlet g:filetype_inc
+
+  " aspperl
+  call writefile(['perlscript'], 'Xfile.inc')
+  split Xfile.inc
+  call assert_equal('aspperl', &filetype)
+  bwipe!
+
+  " aspvbs
+  call writefile(['<% something'], 'Xfile.inc')
+  split Xfile.inc
+  call assert_equal('aspvbs', &filetype)
+  bwipe!
+
+  " php
+  call writefile(['<?php'], 'Xfile.inc')
+  split Xfile.inc
+  call assert_equal('php', &filetype)
+  bwipe!
+
+  " pascal
+  call writefile(['program'], 'Xfile.inc')
+  split Xfile.inc
+  call assert_equal('pascal', &filetype)
+  bwipe!
+
+  " bitbake
+  call writefile(['require foo'], 'Xfile.inc')
+  split Xfile.inc
+  call assert_equal('bitbake', &filetype)
+  bwipe!
+
+  " asm
+  call writefile(['asmsyntax=foo'], 'Xfile.inc')
+  split Xfile.inc
+  call assert_equal('foo', &filetype)
+  bwipe!
+
+  call delete('Xfile.inc')
+  filetype off
+endfunc
 
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/version.c b/src/version.c
index 8ea00e2..f2304f3 100644
--- a/src/version.c
+++ b/src/version.c
@@ -736,6 +736,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    55,
+/**/
     54,
 /**/
     53,