diff --git a/apheleia-formatters.el b/apheleia-formatters.el
index bef7aa04..cbf595cf 100644
--- a/apheleia-formatters.el
+++ b/apheleia-formatters.el
@@ -35,6 +35,7 @@
               "-"))
     (brittany . ("brittany"))
     (buildifier . ("buildifier"))
+    (biome . ("apheleia-npx" "biome" "format" "--stdin-file-path" filepath))
     (caddyfmt . ("caddy" "fmt" "-"))
     (clang-format . ("clang-format"
                      "-assume-filename"
diff --git a/test/formatters/installers/biome.bash b/test/formatters/installers/biome.bash
new file mode 100644
index 00000000..56b6e1b7
--- /dev/null
+++ b/test/formatters/installers/biome.bash
@@ -0,0 +1 @@
+npm install -g @biomejs/biome
diff --git a/test/formatters/samplecode/biome/in.css b/test/formatters/samplecode/biome/in.css
new file mode 120000
index 00000000..d979eb8e
--- /dev/null
+++ b/test/formatters/samplecode/biome/in.css
@@ -0,0 +1 @@
+../prettier-css/in.css
\ No newline at end of file
diff --git a/test/formatters/samplecode/biome/in.graphql b/test/formatters/samplecode/biome/in.graphql
new file mode 120000
index 00000000..bb44c127
--- /dev/null
+++ b/test/formatters/samplecode/biome/in.graphql
@@ -0,0 +1 @@
+../prettier-graphql/in.graphql
\ No newline at end of file
diff --git a/test/formatters/samplecode/biome/in.js b/test/formatters/samplecode/biome/in.js
new file mode 120000
index 00000000..da493037
--- /dev/null
+++ b/test/formatters/samplecode/biome/in.js
@@ -0,0 +1 @@
+../prettier-javascript/in.js
\ No newline at end of file
diff --git a/test/formatters/samplecode/biome/in.json b/test/formatters/samplecode/biome/in.json
new file mode 120000
index 00000000..599a1e23
--- /dev/null
+++ b/test/formatters/samplecode/biome/in.json
@@ -0,0 +1 @@
+../prettier-json/in.json
\ No newline at end of file
diff --git a/test/formatters/samplecode/biome/in.md b/test/formatters/samplecode/biome/in.md
new file mode 120000
index 00000000..99482b8a
--- /dev/null
+++ b/test/formatters/samplecode/biome/in.md
@@ -0,0 +1 @@
+../prettier-markdown/in.md
\ No newline at end of file
diff --git a/test/formatters/samplecode/biome/in.scss b/test/formatters/samplecode/biome/in.scss
new file mode 120000
index 00000000..c07bcb83
--- /dev/null
+++ b/test/formatters/samplecode/biome/in.scss
@@ -0,0 +1 @@
+../prettier-scss/in.scss
\ No newline at end of file
diff --git a/test/formatters/samplecode/biome/in.ts b/test/formatters/samplecode/biome/in.ts
new file mode 120000
index 00000000..1b5f9d6c
--- /dev/null
+++ b/test/formatters/samplecode/biome/in.ts
@@ -0,0 +1 @@
+../prettier-typescript/in.ts
\ No newline at end of file
diff --git a/test/formatters/samplecode/biome/in.yml b/test/formatters/samplecode/biome/in.yml
new file mode 120000
index 00000000..bdbc9aaf
--- /dev/null
+++ b/test/formatters/samplecode/biome/in.yml
@@ -0,0 +1 @@
+../prettier-yaml/in.yml
\ No newline at end of file
diff --git a/test/formatters/samplecode/biome/out.css b/test/formatters/samplecode/biome/out.css
new file mode 120000
index 00000000..603e0aaf
--- /dev/null
+++ b/test/formatters/samplecode/biome/out.css
@@ -0,0 +1 @@
+../prettier-css/out.css
\ No newline at end of file
diff --git a/test/formatters/samplecode/biome/out.graphql b/test/formatters/samplecode/biome/out.graphql
new file mode 120000
index 00000000..64254cfe
--- /dev/null
+++ b/test/formatters/samplecode/biome/out.graphql
@@ -0,0 +1 @@
+../prettier-graphql/out.graphql
\ No newline at end of file
diff --git a/test/formatters/samplecode/biome/out.js b/test/formatters/samplecode/biome/out.js
new file mode 120000
index 00000000..83d53e75
--- /dev/null
+++ b/test/formatters/samplecode/biome/out.js
@@ -0,0 +1 @@
+../prettier-javascript/out.js
\ No newline at end of file
diff --git a/test/formatters/samplecode/biome/out.json b/test/formatters/samplecode/biome/out.json
new file mode 120000
index 00000000..018b8c27
--- /dev/null
+++ b/test/formatters/samplecode/biome/out.json
@@ -0,0 +1 @@
+../prettier-json/out.json
\ No newline at end of file
diff --git a/test/formatters/samplecode/biome/out.md b/test/formatters/samplecode/biome/out.md
new file mode 120000
index 00000000..e58dfd7c
--- /dev/null
+++ b/test/formatters/samplecode/biome/out.md
@@ -0,0 +1 @@
+../prettier-markdown/out.md
\ No newline at end of file
diff --git a/test/formatters/samplecode/biome/out.scss b/test/formatters/samplecode/biome/out.scss
new file mode 120000
index 00000000..1e914a43
--- /dev/null
+++ b/test/formatters/samplecode/biome/out.scss
@@ -0,0 +1 @@
+../prettier-scss/out.scss
\ No newline at end of file
diff --git a/test/formatters/samplecode/biome/out.ts b/test/formatters/samplecode/biome/out.ts
new file mode 120000
index 00000000..022e7b82
--- /dev/null
+++ b/test/formatters/samplecode/biome/out.ts
@@ -0,0 +1 @@
+../prettier-typescript/out.ts
\ No newline at end of file
diff --git a/test/formatters/samplecode/biome/out.yml b/test/formatters/samplecode/biome/out.yml
new file mode 120000
index 00000000..b0f089ee
--- /dev/null
+++ b/test/formatters/samplecode/biome/out.yml
@@ -0,0 +1 @@
+../prettier-yaml/out.yml
\ No newline at end of file
diff --git a/test/formatters/samplecode/prettier-css/out.css b/test/formatters/samplecode/prettier-css/out.css
index 91589966..87717b98 100644
--- a/test/formatters/samplecode/prettier-css/out.css
+++ b/test/formatters/samplecode/prettier-css/out.css
@@ -1,6 +1,6 @@
 body {
-  padding-left: 11em;
-  font-family: Georgia, "Times New Roman", Times, serif;
-  color: purple;
-  background-color: #d8da3d;
+	padding-left: 11em;
+	font-family: Georgia, "Times New Roman", Times, serif;
+	color: purple;
+	background-color: #d8da3d;
 }
diff --git a/test/formatters/samplecode/prettier-graphql/out.graphql b/test/formatters/samplecode/prettier-graphql/out.graphql
index f406f637..89828dab 100644
--- a/test/formatters/samplecode/prettier-graphql/out.graphql
+++ b/test/formatters/samplecode/prettier-graphql/out.graphql
@@ -1,6 +1,6 @@
 {
-  human(id: "1000") {
-    name
-    height(unit: FOOT)
-  }
+	human(id: "1000") {
+		name
+		height(unit: FOOT)
+	}
 }
diff --git a/test/formatters/samplecode/prettier-javascript/out.js b/test/formatters/samplecode/prettier-javascript/out.js
index ec9cfe46..1486b511 100644
--- a/test/formatters/samplecode/prettier-javascript/out.js
+++ b/test/formatters/samplecode/prettier-javascript/out.js
@@ -1,10 +1,10 @@
 function HelloWorld({
-  greeting = "hello",
-  greeted = '"World"',
-  silent = false,
-  onMouseOver,
+	greeting = "hello",
+	greeted = '"World"',
+	silent = false,
+	onMouseOver,
 }) {
-  if (!greeting) {
-    return null;
-  }
+	if (!greeting) {
+		return null;
+	}
 }
diff --git a/test/formatters/samplecode/prettier-json/out.json b/test/formatters/samplecode/prettier-json/out.json
index 59bb3b44..86787f9f 100644
--- a/test/formatters/samplecode/prettier-json/out.json
+++ b/test/formatters/samplecode/prettier-json/out.json
@@ -1,19 +1,19 @@
 {
-  "arrowParens": "always",
-  "bracketSpacing": true,
-  "embeddedLanguageFormatting": "auto",
-  "htmlWhitespaceSensitivity": "css",
-  "insertPragma": false,
-  "jsxBracketSameLine": false,
-  "jsxSingleQuote": false,
-  "printWidth": 80,
-  "proseWrap": "preserve",
-  "quoteProps": "as-needed",
-  "requirePragma": false,
-  "semi": true,
-  "singleQuote": false,
-  "tabWidth": 2,
-  "trailingComma": "es5",
-  "useTabs": false,
-  "vueIndentScriptAndStyle": false
+	"arrowParens": "always",
+	"bracketSpacing": true,
+	"embeddedLanguageFormatting": "auto",
+	"htmlWhitespaceSensitivity": "css",
+	"insertPragma": false,
+	"jsxBracketSameLine": false,
+	"jsxSingleQuote": false,
+	"printWidth": 80,
+	"proseWrap": "preserve",
+	"quoteProps": "as-needed",
+	"requirePragma": false,
+	"semi": true,
+	"singleQuote": false,
+	"tabWidth": 2,
+	"trailingComma": "es5",
+	"useTabs": false,
+	"vueIndentScriptAndStyle": false
 }
diff --git a/test/formatters/samplecode/prettier-typescript/out.ts b/test/formatters/samplecode/prettier-typescript/out.ts
index 143b5a7b..b97c21b1 100644
--- a/test/formatters/samplecode/prettier-typescript/out.ts
+++ b/test/formatters/samplecode/prettier-typescript/out.ts
@@ -1,6 +1,6 @@
 interface GreetingSettings {
-  greeting: string;
-  duration?: number;
-  color?: string;
+	greeting: string;
+	duration?: number;
+	color?: string;
 }
 declare function greet(setting: GreetingSettings): void;