diff --git a/after/ftplugin/requirements.vim b/after/ftplugin/requirements.vim
new file mode 100644
index 0000000..0de1ec8
--- /dev/null
+++ b/after/ftplugin/requirements.vim
@@ -0,0 +1,11 @@
+if executable('pip-compile')
+    let s:filename = expand("%:p")
+    if fnamemodify(s:filename, ":t") ==# 'requirements.in'
+        " this is the default filename for pip-compile
+        setlocal makeprg=pip-compile
+    elseif fnamemodify(s:filename, ":e") ==# 'in'
+        \ && Requirements_matched_filename(s:filename)
+        setlocal makeprg=pip-compile\ %
+    endif
+endif
+" vim: et sw=4 ts=4 sts=4:
diff --git a/ftdetect/requirements.vim b/ftdetect/requirements.vim
index 8c081e4..0994f9b 100644
--- a/ftdetect/requirements.vim
+++ b/ftdetect/requirements.vim
@@ -34,15 +34,16 @@ function! s:isRequirementsFile()
 endfunction
 
 function! Requirements_matched_filename(filename)
-    if a:filename =~# '\v.*require(ment)?s\.(txt|in)$'
+    if fnamemodify(a:filename, ":t") =~# '\vrequire(ment)?s.*\.(txt|in)$'
         return 1
     endif
 
-    if a:filename =~# '\vrequire(ment)?s/.*\.(txt|in)$'
+    if fnamemodify(fnamemodify(a:filename, ":h"), ":t") =~# '\v^require(ment)?s$'
+        \ && fnamemodify(a:filename, ":e") =~# '\v^(txt|in)$'
         return 1
     endif
 
-    if a:filename =~# '\vconstraints\.(txt|in)$'
+    if fnamemodify(a:filename, ":t") =~# '\v^constraints\.(txt|in)$'
         return 1
     endif
 
diff --git a/t/test_ftdetect.vim b/t/test_ftdetect.vim
index fdee35d..22ec400 100644
--- a/t/test_ftdetect.vim
+++ b/t/test_ftdetect.vim
@@ -4,12 +4,16 @@ runtime! plugin/requirements.vim
 describe 'enable: Requirements_matched_filename()'
     it 'to enable file type detection: basic filename'
         Expect Requirements_matched_filename('requirements.txt') to_be_true
+        Expect Requirements_matched_filename('requirements-dev.txt') to_be_true
+        Expect Requirements_matched_filename('dev-requirements.txt') to_be_true
         Expect Requirements_matched_filename('requires.txt') to_be_true
         Expect Requirements_matched_filename('constraints.txt') to_be_true
     end
 
     it 'to enable file type detection: pip-tools filename'
         Expect Requirements_matched_filename('requirements.in') to_be_true
+        Expect Requirements_matched_filename('requirements-dev.in') to_be_true
+        Expect Requirements_matched_filename('dev-requirements.in') to_be_true
         Expect Requirements_matched_filename('requires.in') to_be_true
     end
 
@@ -30,6 +34,8 @@ describe 'disable: Requirements_matched_filename()'
 
     it 'to disable: file type detection: directory structure'
         Expect Requirements_matched_filename('require/dev.txt') to_be_false
+        Expect Requirements_matched_filename('requirements-dev/dev.txt') to_be_false
+        Expect Requirements_matched_filename('dev-requirements/dev.txt') to_be_false
     end
 end