diff --git a/.woodpecker.yml b/.woodpecker.yml
index d14bc3d..b82dd94 100644
--- a/.woodpecker.yml
+++ b/.woodpecker.yml
@@ -1,6 +1,6 @@
 variables:
-  - &rust_image "rust:1.77-bullseye"
-  
+  - &rust_image "rust:1.78-bullseye"
+
 steps:
   cargo_fmt:
     image: rustdocker/rust:nightly
diff --git a/Cargo.toml b/Cargo.toml
index eabcee6..522a84a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,8 +19,8 @@ warnings = "deny"
 deprecated = "deny"
 
 [lints.clippy]
-perf = "deny"
-complexity = "deny"
+perf = { level = "deny", priority = -1 }
+complexity = { level = "deny", priority = -1 }
 dbg_macro  = "deny"
 inefficient_to_string = "deny"
 items-after-statements  = "deny" 
@@ -61,7 +61,7 @@ bytes = "1.6.0"
 futures-core = { version = "0.3.30", default-features = false }
 pin-project-lite = "0.2.14"
 activitystreams-kinds = "0.3.0"
-regex = { version = "1.10.4", default-features = false, features = ["std", "unicode-case"] }
+regex = { version = "1.10.5", default-features = false, features = ["std", "unicode"] }
 tokio = { version = "1.37.0", features = [
   "sync",
   "rt",
diff --git a/src/fetch/mod.rs b/src/fetch/mod.rs
index 67165a9..f078cf6 100644
--- a/src/fetch/mod.rs
+++ b/src/fetch/mod.rs
@@ -65,9 +65,9 @@ pub async fn fetch_object_http<T: Clone, Kind: DeserializeOwned>(
     let content_type = res
         .content_type
         .as_ref()
-        .and_then(|c| c.to_str().ok())
+        .and_then(|c| Some(c.to_str().ok()?.to_lowercase()))
         .ok_or(Error::FetchInvalidContentType(res.url.clone()))?;
-    if !VALID_RESPONSE_CONTENT_TYPES.contains(&content_type) {
+    if !VALID_RESPONSE_CONTENT_TYPES.contains(&content_type.as_str()) {
         return Err(Error::FetchInvalidContentType(res.url));
     }