diff --git a/Cargo.lock b/Cargo.lock
index ce507a4..cb5cd20 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -27,9 +27,9 @@ dependencies = [
 
 [[package]]
 name = "actix-http"
-version = "3.0.0-beta.19"
+version = "3.0.0-rc.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ae58d21721388ea9b2cd0d4c11756b0f34424cdcd6e5cc74c3ce37b4641c8af0"
+checksum = "08aac516b88cb8cfbfa834c76b58607ffac75946d947dcb6a9ffc5673e1e875d"
 dependencies = [
  "actix-codec",
  "actix-rt",
@@ -74,9 +74,9 @@ dependencies = [
 
 [[package]]
 name = "actix-router"
-version = "0.5.0-rc.2"
+version = "0.5.0-rc.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5e0b59ad08167ffbb686ddb495846707231e96908b829b1fc218198ec581e2ad"
+checksum = "cb6506dbef336634ff35d994d58daa0a412ea23751f15f9b4dcac4d594b1ed1f"
 dependencies = [
  "bytestring",
  "firestorm",
@@ -155,9 +155,9 @@ dependencies = [
 
 [[package]]
 name = "actix-web"
-version = "4.0.0-beta.21"
+version = "4.0.0-rc.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "606fc29a9bde2907243086ceb93ce56df7584276c2c46abc64a524f645c63c5e"
+checksum = "d7bfa913583b6cfe5f0d1588e752bcf6b107556422624fefdaf99c40ba2b7f16"
 dependencies = [
  "actix-codec",
  "actix-http",
@@ -194,9 +194,9 @@ dependencies = [
 
 [[package]]
 name = "actix-web-codegen"
-version = "0.5.0-rc.1"
+version = "0.5.0-rc.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "98a793e4a7bd059e06e1bc1bd9943b57a47f806de3599d2437441682292c333e"
+checksum = "4d0976042e6ddc82c7d0dedd64d39959bc26d9bba098b2f6c32a73fbef784eaf"
 dependencies = [
  "actix-router",
  "proc-macro2",
@@ -274,9 +274,9 @@ checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
 
 [[package]]
 name = "awc"
-version = "3.0.0-beta.19"
+version = "3.0.0-beta.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4a4cf9b623ee9974723a10c77a3b8c1060ac2d6cfe6d3326512bbc50fe36fad8"
+checksum = "4a64a95bbf4905fd057ea45b70fdfeeb9c7ae09f03f091642c4e66a16ebb3ad5"
 dependencies = [
  "actix-codec",
  "actix-http",
@@ -1656,9 +1656,9 @@ checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
 
 [[package]]
 name = "security-framework"
-version = "2.5.0"
+version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d09d3c15d814eda1d6a836f2f2b56a6abc1446c8a34351cb3180d3db92ffe4ce"
+checksum = "3fed7948b6c68acbb6e20c334f55ad635dc0f75506963de4464289fbd3b051ac"
 dependencies = [
  "bitflags",
  "core-foundation",
@@ -1669,9 +1669,9 @@ dependencies = [
 
 [[package]]
 name = "security-framework-sys"
-version = "2.5.0"
+version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e90dd10c41c6bfc633da6e0c659bd25d31e0791e5974ac42970267d59eba87f7"
+checksum = "a57321bf8bc2362081b2599912d2961fe899c0efadf1b4b2f8d48b3e253bb96c"
 dependencies = [
  "core-foundation-sys",
  "libc",
@@ -1975,9 +1975,9 @@ dependencies = [
 
 [[package]]
 name = "tracing-actix-web"
-version = "0.5.0-beta.11"
+version = "0.5.0-rc.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "71f2dfaaf009c5e9786e2f2dfbde63d5fa44409434d64190abfef5ade67d89b1"
+checksum = "0066b8102bdd05325d02966fac8b5e360eafd8dcdf81006c4d30f3543f488714"
 dependencies = [
  "actix-web",
  "pin-project",
diff --git a/Cargo.toml b/Cargo.toml
index df05f15..b1b74c3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,7 +14,7 @@ name = "hoc"
 
 [dependencies]
 actix-rt = "2.6.0"
-actix-web = "4.0.0-beta.21"
+actix-web = "4.0.0-rc.1"
 badge = "0.3.0"
 bytes = "1.1.0"
 config = { version = "0.11.0", features = ["toml"] }
@@ -29,7 +29,7 @@ serde = "1.0.136"
 serde_derive = "1.0.136"
 serde_json = "1.0.78"
 tracing = "0.1.29"
-tracing-actix-web = "0.5.0-beta.11"
+tracing-actix-web = "0.5.0-rc.1"
 tracing-bunyan-formatter = "0.3.2"
 tracing-futures = "0.2.5"
 tracing-log = "0.1.2"
@@ -40,7 +40,7 @@ ructe = "0.13.4"
 vergen = { version = "6.0.2", default-features = false, features = ["git"] }
 
 [dev-dependencies]
-awc = "3.0.0-beta.19"
+awc = "3.0.0-beta.20"
 ructe = "0.13.4"
 tempfile = "3.3.0"
 tokio = "1.16.1"
diff --git a/src/lib.rs b/src/lib.rs
index 301b000..5171f0b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -462,11 +462,11 @@ async fn async_p404(repo_count: web::Data<AtomicUsize>) -> Result<HttpResponse>
     p404(repo_count)
 }
 
-fn css() -> HttpResponse {
+async fn css() -> HttpResponse {
     HttpResponse::Ok().content_type("text/css").body(CSS)
 }
 
-fn favicon32() -> HttpResponse {
+async fn favicon32() -> HttpResponse {
     HttpResponse::Ok().content_type("image/png").body(FAVICON)
 }
 
@@ -491,8 +491,7 @@ async fn start_server(listener: TcpListener, settings: Settings) -> std::io::Res
         let app = GitHub::register_service(app);
         let app = Gitlab::register_service(app);
         let app = Bitbucket::register_service(app);
-        let app = Sourcehut::register_service(app);
-        app
+        Sourcehut::register_service(app)
     })
     .workers(workers)
     .listen(listener)?
diff --git a/tests/resources.rs b/tests/resources.rs
new file mode 100644
index 0000000..9765f3c
--- /dev/null
+++ b/tests/resources.rs
@@ -0,0 +1,31 @@
+mod util;
+
+#[actix_rt::test]
+async fn favicon() {
+    let test_app = util::spawn_app().await;
+
+    let client = awc::Client::default();
+
+    let response = client
+        .get(&format!("{}/favicon.ico", test_app.address))
+        .send()
+        .await
+        .expect("Failed to execute request");
+
+    assert!(response.status().is_success());
+}
+
+#[actix_rt::test]
+async fn tacit_css() {
+    let test_app = util::spawn_app().await;
+
+    let client = awc::Client::default();
+
+    let response = client
+        .get(&format!("{}/tacit-css.min.css", test_app.address))
+        .send()
+        .await
+        .expect("Failed to execute request");
+
+    assert!(response.status().is_success());
+}