diff --git a/autoload/vimtex.vim b/autoload/vimtex.vim
index ea32752..c619e9d 100644
--- a/autoload/vimtex.vim
+++ b/autoload/vimtex.vim
@@ -608,7 +608,7 @@ function! s:get_main_recurse(file) " {{{1
     let l:file_re = '\s*((.*)\/)?' . fnamemodify(a:file, ':t:r')
 
     let l:filter  = 'v:val =~# ''\v'
-    let l:filter .= '\\%(input|include)\{' . l:file_re
+    let l:filter .= '\\%(input|include%(only)?)\{' . l:file_re
     let l:filter .= '|\\subimport\{[^\}]*\}\{' . l:file_re
     let l:filter .= ''''
 
diff --git a/autoload/vimtex/complete.vim b/autoload/vimtex/complete.vim
index 409f3cd..513183c 100644
--- a/autoload/vimtex/complete.vim
+++ b/autoload/vimtex/complete.vim
@@ -354,7 +354,7 @@ endfunction
 " {{{1 Filenames (\input and \include)
 
 let s:inc = {
-      \ 'pattern' : '\v\\%(include|input)\s*\{[^{}]*',
+      \ 'pattern' : '\v\\%(include%(only)?|input)\s*\{[^\{\}]*',
       \ 'enabled' : 1,
       \}
 
diff --git a/autoload/vimtex/parser.vim b/autoload/vimtex/parser.vim
index 3f1c1fa..66d014b 100644
--- a/autoload/vimtex/parser.vim
+++ b/autoload/vimtex/parser.vim
@@ -9,7 +9,7 @@ endfunction
 
 " }}}1
 function! vimtex#parser#init_script() " {{{1
-  let s:input_line_tex = '\v^\s*\\%(input|include|subimport|subfile)\s*\{'
+  let s:input_line_tex = '\v^\s*\\%(input|include%(only)?|subimport|subfile)\s*\{'
   let s:input_line_aux = '\\@input{'
 endfunction
 
diff --git a/doc/vimtex.txt b/doc/vimtex.txt
index f2a542c..c138dd2 100644
--- a/doc/vimtex.txt
+++ b/doc/vimtex.txt
@@ -1392,7 +1392,7 @@ documents with |neocomplete| and |vimtex|s omni completion function: >
         \ '\v\\%('
         \ . '\a*%(ref|cite)\a*%(\s*\[[^]]*\])?\s*\{[^{}]*'
         \ . '|includegraphics%(\s*\[[^]]*\])?\s*\{[^{}]*'
-        \ . '|%(include|input)\s*\{[^{}]*'
+        \ . '|%(include%(only)?|input)\s*\{[^\{\}]*'
         \ . ')'
 <
 YouCompleteMe~
@@ -1418,7 +1418,7 @@ To enable automatic completion with |youcompleteme|, use the following options:
   let g:ycm_semantic_triggers.tex = [
         \ 're!\\[A-Za-z]*(ref|cite)[A-Za-z]*([^]]*])?{([^}]*,?)*',
         \ 're!\\includegraphics([^]]*])?{[^}]*',
-        \ 're!\\(include|input){[^}]*'
+        \ 're!\\(include(only)?|input)\{[^\{\}]*'
         \ ]
 
 ==============================================================================