diff --git a/src/datetime.rs b/src/datetime.rs
index 21111fea61..9c5921a29b 100644
--- a/src/datetime.rs
+++ b/src/datetime.rs
@@ -1422,12 +1422,13 @@ pub mod serde {
         where
             D: de::Deserializer<'de>,
         {
-            Ok(try!(d.deserialize_i64(microSecondsTimestampVisitor)))
+            #[allow(deprecated)]
+            Ok(try!(d.deserialize_i64(MicroSecondsTimestampVisitor)))
         }
 
-        struct microSecondsTimestampVisitor;
+        struct MicroSecondsTimestampVisitor;
 
-        impl<'de> de::Visitor<'de> for microSecondsTimestampVisitor {
+        impl<'de> de::Visitor<'de> for MicroSecondsTimestampVisitor {
             type Value = DateTime<Utc>;
 
             fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
diff --git a/src/lib.rs b/src/lib.rs
index e5045ce19e..7d77868782 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -427,6 +427,8 @@
     redundant_static_lifetimes,
     // the field-init shorthand (which this lint recommends) was stabilized in rust 1.17.
     redundant_field_names,
+    // #[non_exhaustive] was introduced in 1.40
+    manual_non_exhaustive,
     // `matches!` was stabilized in 1.42
     match_like_matches_macro,
     // Changing trivially_copy_pass_by_ref would require an incompatible version