diff --git a/crates/csslsrs/src/features/hover.rs b/crates/csslsrs/src/features/hover.rs
index dfc9e64..cb56f63 100644
--- a/crates/csslsrs/src/features/hover.rs
+++ b/crates/csslsrs/src/features/hover.rs
@@ -339,19 +339,25 @@ mod wasm_bindings {
     };
     use biome_rowan::AstNode;
     use lsp_types::Position;
+    use serde_json::from_str;
     use serde_wasm_bindgen;
+    use std::sync::LazyLock;
     use wasm_bindgen::prelude::*;
-
     extern crate console_error_panic_hook;
 
+    // TMP: Embed the JSON data at compile time
+    // We'll eventually use the language service when it'll be available in WASM
+    static CSS_SCHEMA_JSON: &str = include_str!("../../data/css-schema.json");
+    static CSS_DATA: LazyLock<CssCustomData> =
+        LazyLock::new(|| from_str(CSS_SCHEMA_JSON).expect("Failed to parse css-schema.json"));
+
     #[wasm_bindgen(typescript_custom_section)]
-    const TS_APPEND_CONTENT: &'static str = r#"export async function get_hover(document: import("vscode-languageserver-textdocument").TextDocument, position: import("vscode-languageserver-types").Position, cssData: any): Promise<import("vscode-languageserver-types").Hover | null>;"#;
+    const TS_APPEND_CONTENT: &'static str = r#"export async function get_hover(document: import("vscode-languageserver-textdocument").TextDocument, position: import("vscode-languageserver-types").Position): Promise<import("vscode-languageserver-types").Hover | null>;"#;
 
     #[wasm_bindgen(skip_typescript)]
-    pub fn get_hover(document: JsValue, position: JsValue, css_data: JsValue) -> JsValue {
+    pub fn get_hover(document: JsValue, position: JsValue) -> JsValue {
         let parsed_text_document = create_text_document(document);
         let position: Position = serde_wasm_bindgen::from_value(position).unwrap();
-        let css_data: CssCustomData = serde_wasm_bindgen::from_value(css_data).unwrap();
         let css_parse = parse_css(&parsed_text_document.text);
         let line_index = LineIndex::new(&parsed_text_document.text);
         let encoding = PositionEncoding::Wide(WideEncoding::Utf16);
@@ -361,7 +367,7 @@ mod wasm_bindings {
             position,
             &line_index,
             encoding,
-            &css_data,
+            &CSS_DATA,
         );
 
         serde_wasm_bindgen::to_value(&hover).unwrap()
diff --git a/packages/benchmark-wasm/benchmarks/hover.ts b/packages/benchmark-wasm/benchmarks/hover.ts
index 3c10abf..ccf6f88 100644
--- a/packages/benchmark-wasm/benchmarks/hover.ts
+++ b/packages/benchmark-wasm/benchmarks/hover.ts
@@ -2,7 +2,6 @@ import { Bench } from "tinybench"
 import { get_hover } from "../../csslsrs/dist/generated/csslsrs"
 import { getCSSLanguageService } from "vscode-css-languageservice"
 import { TextDocument } from "vscode-languageserver-textdocument"
-import cssCustomData from "../../../crates/csslsrs/data/css-schema.json"
 
 const bench = new Bench({ name: "Hover", time: 100 })
 
@@ -32,7 +31,7 @@ export function registerHoverBenchmarks(
   onlyCSSLSRS: boolean
 ): Bench {
   bench.add("CSSLSRS(WASM) - Hover", async () => {
-    await get_hover(textDocument, { line: 4, character: 3 }, cssCustomData)
+    await get_hover(textDocument, { line: 4, character: 3 })
   })
 
   if (onlyCSSLSRS) return bench