diff --git a/test_suite/Cargo.toml b/test_suite/Cargo.toml
index 07e62656a..4076e735a 100644
--- a/test_suite/Cargo.toml
+++ b/test_suite/Cargo.toml
@@ -13,7 +13,7 @@ serde = { path = "../serde" }
 
 [dev-dependencies]
 automod = "1.0.1"
-fnv = "1.0"
+foldhash = "0.1"
 rustversion = "1.0"
 serde = { path = "../serde", features = ["rc"] }
 serde_derive = { path = "../serde_derive", features = ["deserialize_in_place"] }
diff --git a/test_suite/tests/macros/mod.rs b/test_suite/tests/macros/mod.rs
index d66324464..44b98ae2f 100644
--- a/test_suite/tests/macros/mod.rs
+++ b/test_suite/tests/macros/mod.rs
@@ -34,9 +34,8 @@ macro_rules! hashset {
         $(set.insert($value);)+
         set
     }};
-    ($hasher:ident @ $($value:expr),+) => {{
-        use std::hash::BuildHasherDefault;
-        let mut set = HashSet::with_hasher(BuildHasherDefault::<$hasher>::default());
+    ($hasher:ty; $($value:expr),+) => {{
+        let mut set = HashSet::<_, $hasher>::default();
         $(set.insert($value);)+
         set
     }};
@@ -51,9 +50,8 @@ macro_rules! hashmap {
         $(map.insert($key, $value);)+
         map
     }};
-    ($hasher:ident @ $($key:expr => $value:expr),+) => {{
-        use std::hash::BuildHasherDefault;
-        let mut map = HashMap::with_hasher(BuildHasherDefault::<$hasher>::default());
+    ($hasher:ty; $($key:expr => $value:expr),+) => {{
+        let mut map = HashMap::<_, _, $hasher>::default();
         $(map.insert($key, $value);)+
         map
     }};
diff --git a/test_suite/tests/test_de.rs b/test_suite/tests/test_de.rs
index 31e726d4b..2e80fbaf9 100644
--- a/test_suite/tests/test_de.rs
+++ b/test_suite/tests/test_de.rs
@@ -10,7 +10,6 @@
 )]
 #![cfg_attr(feature = "unstable", feature(never_type))]
 
-use fnv::FnvHasher;
 use serde::de::value::{F32Deserializer, F64Deserializer};
 use serde::de::{Deserialize, DeserializeOwned, Deserializer, IntoDeserializer};
 use serde_derive::Deserialize;
@@ -1040,7 +1039,7 @@ fn test_hashset() {
         ],
     );
     test(
-        hashset![FnvHasher @ 1, 2, 3],
+        hashset![foldhash::fast::FixedState; 1, 2, 3],
         &[
             Token::Seq { len: Some(3) },
             Token::I32(1),
@@ -1275,7 +1274,7 @@ fn test_hashmap() {
         ],
     );
     test(
-        hashmap![FnvHasher @ 1 => 2, 3 => 4],
+        hashmap![foldhash::fast::FixedState; 1 => 2, 3 => 4],
         &[
             Token::Map { len: Some(2) },
             Token::I32(1),
diff --git a/test_suite/tests/test_ser.rs b/test_suite/tests/test_ser.rs
index b60d03ab2..1c8063184 100644
--- a/test_suite/tests/test_ser.rs
+++ b/test_suite/tests/test_ser.rs
@@ -1,7 +1,6 @@
 #![allow(clippy::derive_partial_eq_without_eq, clippy::unreadable_literal)]
 #![cfg_attr(feature = "unstable", feature(never_type))]
 
-use fnv::FnvHasher;
 use serde_derive::Serialize;
 use serde_test::{assert_ser_tokens, assert_ser_tokens_error, Configure, Token};
 use std::cell::RefCell;
@@ -220,7 +219,7 @@ fn test_hashset() {
         &[Token::Seq { len: Some(1) }, Token::I32(1), Token::SeqEnd],
     );
     assert_ser_tokens(
-        &hashset![FnvHasher @ 1],
+        &hashset![foldhash::fast::FixedState; 1],
         &[Token::Seq { len: Some(1) }, Token::I32(1), Token::SeqEnd],
     );
 }
@@ -300,7 +299,7 @@ fn test_hashmap() {
         ],
     );
     assert_ser_tokens(
-        &hashmap![FnvHasher @ 1 => 2],
+        &hashmap![foldhash::fast::FixedState; 1 => 2],
         &[
             Token::Map { len: Some(1) },
             Token::I32(1),