diff --git a/ale_linters/javascript/biome.vim b/ale_linters/javascript/biome.vim
index 71a081143b..61f7c8f4c7 100644
--- a/ale_linters/javascript/biome.vim
+++ b/ale_linters/javascript/biome.vim
@@ -4,6 +4,7 @@
 call ale#linter#Define('javascript', {
 \   'name': 'biome',
 \   'lsp': 'stdio',
+\   'language': function('ale#handlers#biome#GetLanguage'),
 \   'executable': function('ale#handlers#biome#GetExecutable'),
 \   'command': function('ale#handlers#biome#GetCommand'),
 \   'project_root': function('ale#handlers#biome#GetProjectRoot'),
diff --git a/ale_linters/typescript/biome.vim b/ale_linters/typescript/biome.vim
index 763a254c99..301157441a 100644
--- a/ale_linters/typescript/biome.vim
+++ b/ale_linters/typescript/biome.vim
@@ -4,6 +4,7 @@
 call ale#linter#Define('typescript', {
 \   'name': 'biome',
 \   'lsp': 'stdio',
+\   'language': function('ale#handlers#biome#GetLanguage'),
 \   'executable': function('ale#handlers#biome#GetExecutable'),
 \   'command': function('ale#handlers#biome#GetCommand'),
 \   'project_root': function('ale#handlers#biome#GetProjectRoot'),
diff --git a/autoload/ale/handlers/biome.vim b/autoload/ale/handlers/biome.vim
index e8da6a2f7a..a12bfe831f 100644
--- a/autoload/ale/handlers/biome.vim
+++ b/autoload/ale/handlers/biome.vim
@@ -25,6 +25,10 @@ function! ale#handlers#biome#GetCommand(buffer) abort
     \   . (!empty(l:options) ? ' ' . l:options : '')
 endfunction
 
+function! ale#handlers#biome#GetLanguage(buffer) abort
+    return getbufvar(a:buffer, '&filetype')
+endfunction
+
 function! ale#handlers#biome#GetProjectRoot(buffer) abort
     let l:biome_file = ale#path#FindNearestFile(a:buffer, 'biome.json')
 
diff --git a/test/linter/test_typescript_biome.vader b/test/linter/test_biome.vader
similarity index 51%
rename from test/linter/test_typescript_biome.vader
rename to test/linter/test_biome.vader
index 79bcbebc00..c2cd9407d3 100644
--- a/test/linter/test_typescript_biome.vader
+++ b/test/linter/test_biome.vader
@@ -16,3 +16,20 @@ Execute(The biome command should accept options):
   let g:ale_biome_options = '--foobar'
 
   AssertLinter 'biome', ale#Escape('biome') . ' lsp-proxy --foobar'
+
+Execute(Uses the filetype as the language):
+  call ale#test#SetFilename('test.ts')
+  set filetype=typescript
+  AssertLSPLanguage 'typescript'
+
+  call ale#test#SetFilename('test.tsx')
+  set filetype=typescriptreact
+  AssertLSPLanguage 'typescriptreact'
+
+  call ale#test#SetFilename('test.js')
+  set filetype=javascript
+  AssertLSPLanguage 'javascript'
+
+  call ale#test#SetFilename('test.jsx')
+  set filetype=javascriptreact
+  AssertLSPLanguage 'javascriptreact'