diff --git a/autoload/ale/python.vim b/autoload/ale/python.vim
index fc6c1130..779844a2 100644
--- a/autoload/ale/python.vim
+++ b/autoload/ale/python.vim
@@ -34,6 +34,7 @@ function! ale#python#FindProjectRootIni(buffer) abort
         \|| filereadable(l:path . '/Pipfile.lock')
         \|| filereadable(l:path . '/poetry.lock')
         \|| filereadable(l:path . '/pyproject.toml')
+        \|| filereadable(l:path . '/.tool_versions')
             return l:path
         endif
     endfor
diff --git a/doc/ale-python.txt b/doc/ale-python.txt
index 6deff8f2..21dee657 100644
--- a/doc/ale-python.txt
+++ b/doc/ale-python.txt
@@ -38,6 +38,7 @@ ALE will look for configuration files with the following filenames. >
   Pipfile.lock
   poetry.lock
   pyproject.toml
+  .tool_versions
 <
 
 The first directory containing any of the files named above will be used.