diff --git a/ale_linters/elixir/credo.vim b/ale_linters/elixir/credo.vim
index 7c298502..892d47b9 100644
--- a/ale_linters/elixir/credo.vim
+++ b/ale_linters/elixir/credo.vim
@@ -45,6 +45,16 @@ function! ale_linters#elixir#credo#GetMode() abort
     endif
 endfunction
 
+function! ale_linters#elixir#credo#GetConfigFile() abort
+    let l:config_file = get(g:, 'ale_elixir_credo_config_file', '')
+
+    if empty(l:config_file)
+        return ''
+    endif
+
+    return ' --config-file ' . l:config_file
+endfunction
+
 function! ale_linters#elixir#credo#GetCommand(buffer) abort
     let l:project_root = ale#handlers#elixir#FindMixUmbrellaRoot(a:buffer)
     let l:mode = ale_linters#elixir#credo#GetMode()
@@ -52,6 +62,7 @@ function! ale_linters#elixir#credo#GetCommand(buffer) abort
     return ale#path#CdString(l:project_root)
     \ . 'mix help credo && '
     \ . 'mix credo ' . ale_linters#elixir#credo#GetMode()
+    \ . ale_linters#elixir#credo#GetConfigFile()
     \ . ' --format=flycheck --read-from-stdin %s'
 endfunction
 
diff --git a/doc/ale-elixir.txt b/doc/ale-elixir.txt
index de9daacf..a4e5c2c6 100644
--- a/doc/ale-elixir.txt
+++ b/doc/ale-elixir.txt
@@ -85,5 +85,12 @@ g:ale_elixir_credo_strict                           *g:ale_elixir_credo_strict*
   Tells credo to run in strict mode or suggest mode.  Set variable to 1 to
   enable --strict mode.
 
+g:ale_elixir_credo_config_file                 g:ale_elixir_credo_config_file
+
+  Type: String
+  Default: ''
+
+  Tells credo to use a custom configuration file.
+
 ===============================================================================
   vim:tw=78:ts=2:sts=2:sw=2:ft=help:norl:
diff --git a/test/command_callback/test_elixir_credo.vader b/test/command_callback/test_elixir_credo.vader
index 3eb88846..b14444c6 100644
--- a/test/command_callback/test_elixir_credo.vader
+++ b/test/command_callback/test_elixir_credo.vader
@@ -38,3 +38,10 @@ Execute(Builds credo command with suggest mode when set to 0):
   AssertLinter 'mix',
   \ ale#path#CdString(ale#path#Simplify(g:dir . '/elixir_paths/mix_project'))
   \ . 'mix help credo && mix credo suggest --format=flycheck --read-from-stdin %s'
+
+Execute(Builds credo command with a custom config file):
+  let g:ale_elixir_credo_config_file = '/home/user/custom_credo.exs'
+
+  AssertLinter 'mix',
+  \ ale#path#CdString(ale#path#Simplify(g:dir . '/elixir_paths/mix_project'))
+  \ . 'mix help credo && mix credo suggest --config-file /home/user/custom_credo.exs --format=flycheck --read-from-stdin %s'