diff --git a/crates/core/src/ranking/signal/computer/mod.rs b/crates/core/src/ranking/signal/computer/mod.rs
index 75dd423f..faf73111 100644
--- a/crates/core/src/ranking/signal/computer/mod.rs
+++ b/crates/core/src/ranking/signal/computer/mod.rs
@@ -429,9 +429,7 @@ impl SignalComputer {
     }
 
     pub fn region_count(&self) -> Option<&RegionCount> {
-        self.region_count
-            .as_ref()
-            .map(|region_count| &**region_count)
+        self.region_count.as_deref()
     }
 
     pub fn query_data(&self) -> Option<&QueryData> {
diff --git a/crates/core/src/ranking/signal/non_text.rs b/crates/core/src/ranking/signal/non_text.rs
index 098d1e99..20de67f8 100644
--- a/crates/core/src/ranking/signal/non_text.rs
+++ b/crates/core/src/ranking/signal/non_text.rs
@@ -88,7 +88,7 @@ fn score_region(webpage_region: crate::webpage::Region, computer: &SignalCompute
     }
 }
 
-fn host_id<'a>(fastfield_reader: &FieldReader<'a>) -> Option<NodeID> {
+fn host_id(fastfield_reader: &FieldReader<'_>) -> Option<NodeID> {
     let node_id = fastfield_reader
         .get(schema::fast_field::HostNodeID.into())
         .and_then(|n| n.as_u64())
diff --git a/scripts/ci/check b/scripts/ci/check
index 47f57e4f..fc565896 100755
--- a/scripts/ci/check
+++ b/scripts/ci/check
@@ -3,6 +3,7 @@ set -e
 
 cargo check
 cargo check --no-default-features
+cargo clippy -- -D warnings
 
 cd crates/client-wasm && wasm-pack build --target web && cd -
 cd frontend && npm install && npm run check && npm run lint