diff --git a/Cargo.toml b/Cargo.toml
index 170908a..bf615e8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,7 +19,17 @@ rust_2018_idioms = { level = "warn", priority = -1 }
 unreachable_pub = "warn"
 
 [lints.clippy]
+all = { level = "deny", priority = -1 }
 pedantic = { level = "warn", priority = -1 }
 nursery = { level = "warn", priority = -1 }
 cargo = { level = "warn", priority = -1 }
-allow_attributes_without_reason = "warn"
+allow_attributes = "deny"
+allow_attributes_without_reason = "deny"
+cfg_not_test = "deny"
+dbg_macro = "deny"
+large_include_file = "deny"
+let_underscore_must_use = "deny"
+todo = "deny"
+unimplemented = "deny"
+unused_result_ok = "deny"
+unwrap_used = "deny"
diff --git a/tests/contents.rs b/tests/contents.rs
index e98ef13..ce8a4a2 100644
--- a/tests/contents.rs
+++ b/tests/contents.rs
@@ -46,13 +46,14 @@ fn header_carries_the_declared_sqlite_version() {
 
 #[test]
 fn crate_version_encodes_the_release() {
-    let mut parts = SQLITE3MC_VERSION
-        .split('.')
-        .map(|part| part.parse::<u64>().unwrap());
+    let mut parts = SQLITE3MC_VERSION.split('.').map(|part| {
+        part.parse::<u64>()
+            .expect("version component is an integer")
+    });
     let (major, minor, patch) = (
-        parts.next().unwrap(),
-        parts.next().unwrap(),
-        parts.next().unwrap(),
+        parts.next().expect("version has a major component"),
+        parts.next().expect("version has a minor component"),
+        parts.next().expect("version has a patch component"),
     );
     let (numbers, metadata) = env!("CARGO_PKG_VERSION")
         .split_once('+')