diff --git a/test/Cargo.lock b/test/Cargo.lock
index 1c7324b2c590..24852c3356e4 100644
--- a/test/Cargo.lock
+++ b/test/Cargo.lock
@@ -3453,7 +3453,6 @@ dependencies = [
  "mullvad-types",
  "mullvad-version",
  "nix 0.29.0",
- "once_cell",
  "pcap",
  "pnet_base",
  "pnet_packet",
@@ -3515,7 +3514,6 @@ dependencies = [
  "log",
  "mullvad-paths",
  "nix 0.29.0",
- "once_cell",
  "parity-tokio-ipc",
  "plist",
  "rand 0.8.5",
diff --git a/test/Cargo.toml b/test/Cargo.toml
index 8c691719ecaf..621591699260 100644
--- a/test/Cargo.toml
+++ b/test/Cargo.toml
@@ -75,7 +75,6 @@ shadowsocks-service = "1.20.3"
 windows-sys = "0.52.0"
 chrono = { version = "0.4.26", default-features = false }
 clap = { version = "4.2.7", features = ["cargo", "derive"] }
-once_cell = "1.16.0"
 bytes = "1.3.0"
 async-trait = "0.1.58"
 surge-ping = "0.8"
diff --git a/test/test-manager/Cargo.toml b/test/test-manager/Cargo.toml
index 8be5cda40637..2671ea454a4d 100644
--- a/test/test-manager/Cargo.toml
+++ b/test/test-manager/Cargo.toml
@@ -22,7 +22,6 @@ thiserror = { workspace = true }
 bytes = { workspace = true }
 test_macro = { path = "./test_macro" }
 ipnetwork = "0.20"
-once_cell = { workspace = true }
 inventory = "0.3"
 data-encoding-macro = "0.1.12"
 itertools = "0.10.5"
diff --git a/test/test-manager/src/tests/config.rs b/test/test-manager/src/tests/config.rs
index ae2f434698c2..04b2e01e71b1 100644
--- a/test/test-manager/src/tests/config.rs
+++ b/test/test-manager/src/tests/config.rs
@@ -1,7 +1,9 @@
-use once_cell::sync::OnceCell;
+use std::sync::OnceLock;
 use std::{ops::Deref, path::Path};
 use test_rpc::meta::Os;
 
+pub static TEST_CONFIG: TestConfigContainer = TestConfigContainer::new();
+
 /// Default `mullvad_host`. This should match the production env.
 pub const DEFAULT_MULLVAD_HOST: &str = "mullvad.net";
 /// Bundled OpenVPN CA certificate use with the installed Mullvad app.
@@ -110,9 +112,13 @@ impl Default for BootstrapScript {
 }
 
 #[derive(Debug, Clone)]
-pub struct TestConfigContainer(OnceCell<TestConfig>);
+pub struct TestConfigContainer(OnceLock<TestConfig>);
 
 impl TestConfigContainer {
+    const fn new() -> Self {
+        TestConfigContainer(OnceLock::new())
+    }
+
     /// Initializes the constants.
     ///
     /// # Panics
@@ -130,5 +136,3 @@ impl Deref for TestConfigContainer {
         self.0.get().unwrap()
     }
 }
-
-pub static TEST_CONFIG: TestConfigContainer = TestConfigContainer(OnceCell::new());
diff --git a/test/test-runner/Cargo.toml b/test/test-runner/Cargo.toml
index 8df61e7164f8..fd53f4b7cb79 100644
--- a/test/test-runner/Cargo.toml
+++ b/test/test-runner/Cargo.toml
@@ -18,7 +18,6 @@ tokio = { workspace = true }
 tokio-serial = { workspace = true }
 thiserror = { workspace = true }
 log = { workspace = true }
-once_cell = { workspace = true }
 parity-tokio-ipc = "0.9"
 bytes = { workspace = true }
 serde = { workspace = true }
diff --git a/test/test-runner/src/net.rs b/test/test-runner/src/net.rs
index a12fa2776cb6..7d32f0481208 100644
--- a/test/test-runner/src/net.rs
+++ b/test/test-runner/src/net.rs
@@ -251,10 +251,10 @@ pub fn get_interface_mac(_interface: &str) -> Result<Option<[u8; 6]>, test_rpc::
 
 #[cfg(target_os = "windows")]
 pub fn get_default_interface() -> &'static str {
-    use once_cell::sync::OnceCell;
+    use std::sync::OnceLock;
     use talpid_platform_metadata::WindowsVersion;
 
-    static WINDOWS_VERSION: OnceCell<WindowsVersion> = OnceCell::new();
+    static WINDOWS_VERSION: OnceLock<WindowsVersion> = OnceLock::new();
     let version = WINDOWS_VERSION
         .get_or_init(|| WindowsVersion::new().expect("failed to obtain Windows version"));