diff --git a/clippy.toml b/clippy.toml
new file mode 100644
index 0000000..0e5f352
--- /dev/null
+++ b/clippy.toml
@@ -0,0 +1 @@
+cognitive-complexity-threshold = 10
diff --git a/crates/pacdef_core/src/lib.rs b/crates/pacdef_core/src/lib.rs
index 4a993e2..a44295c 100644
--- a/crates/pacdef_core/src/lib.rs
+++ b/crates/pacdef_core/src/lib.rs
@@ -4,6 +4,7 @@ This library contains all logic that happens in `pacdef` under the hood.
 
 #![warn(
     clippy::as_conversions,
+    clippy::cognitive_complexity,
     clippy::option_if_let_else,
     clippy::redundant_pub_crate,
     clippy::semicolon_if_nothing_returned,
diff --git a/crates/pacdef_macros/src/lib.rs b/crates/pacdef_macros/src/lib.rs
index 05fc176..90fd52d 100644
--- a/crates/pacdef_macros/src/lib.rs
+++ b/crates/pacdef_macros/src/lib.rs
@@ -3,6 +3,7 @@ Procedural macros for `pacdef`.
 */
 #![warn(
     clippy::as_conversions,
+    clippy::cognitive_complexity,
     clippy::option_if_let_else,
     clippy::redundant_pub_crate,
     clippy::semicolon_if_nothing_returned,