diff --git a/Cargo.lock b/Cargo.lock
index e070c18a..ce9bea4f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1076,12 +1076,6 @@ dependencies = [
  "wasm-bindgen",
 ]
 
-[[package]]
-name = "json"
-version = "0.12.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "078e285eafdfb6c4b434e0d31e8cfcb5115b651496faca5749b88fafd4f23bfd"
-
 [[package]]
 name = "kqueue"
 version = "1.0.8"
@@ -1225,7 +1219,6 @@ dependencies = [
  "handlebars",
  "hex",
  "ignore",
- "json",
  "log",
  "memchr",
  "notify",
diff --git a/Cargo.toml b/Cargo.toml
index 84ee9f52..0044fd2a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -59,7 +59,6 @@ ammonia = { version = "4.0.0", optional = true }
 
 [dev-dependencies]
 assert_cmd = "2.0.11"
-json = "0.12.4"
 predicates = "3.0.3"
 select = "0.6.0"
 semver = "1.0.17"
diff --git a/tests/gui/runner.rs b/tests/gui/runner.rs
index e963ab58..3177ff4f 100644
--- a/tests/gui/runner.rs
+++ b/tests/gui/runner.rs
@@ -1,3 +1,4 @@
+use serde_json::Value;
 use std::collections::HashSet;
 use std::env::current_dir;
 use std::fs::{read_dir, read_to_string, remove_dir_all};
@@ -28,18 +29,17 @@ fn get_available_browser_ui_test_version() -> Option<String> {
 
 fn expected_browser_ui_test_version() -> String {
     let content = read_to_string("package.json").expect("failed to read `package.json`");
-    let json = json::parse(&content).expect("invalid JSON");
-    if let json::JsonValue::Object(obj) = json {
-        if let Some(json::JsonValue::Object(deps)) = obj.get("dependencies") {
-            if let Some(version) = deps
-                .get("browser-ui-test")
-                .and_then(|version| version.as_str())
-            {
-                return version.trim().to_string();
-            }
-        }
-    }
-    panic!("failed to retrieved `browser-ui-test` version");
+    let v: Value = serde_json::from_str(&content).expect("failed to parse `package.json`");
+    let Some(dependencies) = v.get("dependencies") else {
+        panic!("Missing `dependencies` key in `package.json`");
+    };
+    let Some(browser_ui_test) = dependencies.get("browser-ui-test") else {
+        panic!("Missing `browser-ui-test` key in \"dependencies\" object in `package.json`");
+    };
+    let Value::String(version) = browser_ui_test else {
+        panic!("`browser-ui-test` version is not a string");
+    };
+    version.trim().to_string()
 }
 
 fn main() {