diff --git a/src/sixty_four.rs b/src/sixty_four.rs
index b13239ae8..c03a63efe 100644
--- a/src/sixty_four.rs
+++ b/src/sixty_four.rs
@@ -14,7 +14,7 @@ pub const PRIME_5: u64 = 2_870_177_450_012_600_261;
 
 #[cfg_attr(feature = "serialize", derive(Deserialize, Serialize))]
 #[cfg_attr(feature = "mem_dbg", derive(mem_dbg::MemSize, mem_dbg::MemDbg))]
-#[derive(Copy, Clone, PartialEq)]
+#[derive(Copy, Clone, Eq, Hash, PartialEq)]
 struct XxCore {
     v1: u64,
     v2: u64,
@@ -25,7 +25,7 @@ struct XxCore {
 /// Calculates the 64-bit hash.
 #[cfg_attr(feature = "serialize", derive(Deserialize, Serialize))]
 #[cfg_attr(feature = "mem_dbg", derive(mem_dbg::MemSize, mem_dbg::MemDbg))]
-#[derive(Debug, Copy, Clone, PartialEq)]
+#[derive(Debug, Copy, Clone, Eq, PartialEq)]
 pub struct XxHash64 {
     total_len: u64,
     seed: u64,
@@ -124,7 +124,7 @@ impl core::fmt::Debug for XxCore {
 }
 
 #[cfg_attr(feature = "serialize", derive(Serialize, Deserialize))]
-#[derive(Debug, Copy, Clone, Default, PartialEq)]
+#[derive(Debug, Copy, Clone, Default, PartialEq, Eq)]
 #[repr(align(8))]
 #[cfg_attr(feature = "serialize", serde(transparent))]
 #[cfg_attr(feature = "mem_dbg", derive(mem_dbg::MemSize, mem_dbg::MemDbg))]
@@ -132,7 +132,7 @@ struct AlignToU64<T>(T);
 
 #[cfg_attr(feature = "serialize", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "mem_dbg", derive(mem_dbg::MemSize, mem_dbg::MemDbg))]
-#[derive(Debug, Copy, Clone, Default, PartialEq)]
+#[derive(Debug, Copy, Clone, Default, PartialEq, Eq)]
 struct Buffer {
     #[cfg_attr(feature = "serialize", serde(rename = "buffer"))]
     data: AlignToU64<[u8; CHUNK_SIZE]>,
diff --git a/src/std_support.rs b/src/std_support.rs
index a806e672f..7e40c609e 100644
--- a/src/std_support.rs
+++ b/src/std_support.rs
@@ -3,8 +3,8 @@ pub mod sixty_four {
     use core::hash::BuildHasher;
     use rand::{self, Rng};
 
-    #[derive(Clone)]
     #[cfg_attr(feature = "mem_dbg", derive(mem_dbg::MemSize, mem_dbg::MemDbg))]
+    #[derive(Clone, Debug, Eq, PartialEq, Hash)]
     /// Constructs a randomized seed and reuses it for multiple hasher instances.
     pub struct RandomXxHashBuilder64(u64);
 
@@ -34,8 +34,8 @@ pub mod thirty_two {
     use core::hash::BuildHasher;
     use rand::{self, Rng};
 
-    #[derive(Clone)]
     #[cfg_attr(feature = "mem_dbg", derive(mem_dbg::MemSize, mem_dbg::MemDbg))]
+    #[derive(Clone, Debug, Eq, PartialEq, Hash)]
     /// Constructs a randomized seed and reuses it for multiple hasher instances. See the usage warning on `XxHash32`.
     pub struct RandomXxHashBuilder32(u32);
 
@@ -65,8 +65,8 @@ pub mod xxh3 {
     use core::hash::BuildHasher;
     use rand::{self, Rng};
 
-    #[derive(Clone)]
     #[cfg_attr(feature = "mem_dbg", derive(mem_dbg::MemSize, mem_dbg::MemDbg))]
+    #[derive(Clone, Debug, Eq, PartialEq, Hash)]
     /// Constructs a randomized seed and reuses it for multiple hasher instances.
     pub struct RandomHashBuilder64(u64);
 
@@ -90,8 +90,8 @@ pub mod xxh3 {
         }
     }
 
-    #[derive(Clone)]
     #[cfg_attr(feature = "mem_dbg", derive(mem_dbg::MemSize, mem_dbg::MemDbg))]
+    #[derive(Clone, Debug, Eq, PartialEq, Hash)]
     /// Constructs a randomized seed and reuses it for multiple hasher instances.
     pub struct RandomHashBuilder128(u64);
 
diff --git a/src/thirty_two.rs b/src/thirty_two.rs
index daa74965f..cd3604b04 100644
--- a/src/thirty_two.rs
+++ b/src/thirty_two.rs
@@ -14,7 +14,7 @@ pub const PRIME_5: u32 = 374_761_393;
 
 #[cfg_attr(feature = "serialize", derive(Deserialize, Serialize))]
 #[cfg_attr(feature = "mem_dbg", derive(mem_dbg::MemSize, mem_dbg::MemDbg))]
-#[derive(Copy, Clone, PartialEq)]
+#[derive(Copy, Clone, PartialEq, Eq)]
 struct XxCore {
     v1: u32,
     v2: u32,
@@ -30,7 +30,7 @@ struct XxCore {
 /// unlikely to be correct to use this in places like a `HashMap`.
 #[cfg_attr(feature = "serialize", derive(Deserialize, Serialize))]
 #[cfg_attr(feature = "mem_dbg", derive(mem_dbg::MemSize, mem_dbg::MemDbg))]
-#[derive(Debug, Copy, Clone, PartialEq)]
+#[derive(Debug, Copy, Clone, PartialEq, Eq)]
 pub struct XxHash32 {
     total_len: u64,
     seed: u32,
@@ -114,7 +114,7 @@ impl core::fmt::Debug for XxCore {
 }
 
 #[cfg_attr(feature = "serialize", derive(Serialize, Deserialize))]
-#[derive(Debug, Copy, Clone, Default, PartialEq)]
+#[derive(Debug, Copy, Clone, Default, PartialEq, Eq)]
 #[repr(align(4))]
 #[cfg_attr(feature = "serialize", serde(transparent))]
 #[cfg_attr(feature = "mem_dbg", derive(mem_dbg::MemSize, mem_dbg::MemDbg))]
@@ -122,7 +122,7 @@ struct AlignToU32<T>(T);
 
 #[cfg_attr(feature = "serialize", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "mem_dbg", derive(mem_dbg::MemSize, mem_dbg::MemDbg))]
-#[derive(Debug, Copy, Clone, Default, PartialEq)]
+#[derive(Debug, Copy, Clone, Default, PartialEq, Eq)]
 struct Buffer {
     #[cfg_attr(feature = "serialize", serde(rename = "buffer"))]
     data: AlignToU32<[u8; CHUNK_SIZE]>,
diff --git a/src/xxh3.rs b/src/xxh3.rs
index 19d97d8d6..62ce10c38 100644
--- a/src/xxh3.rs
+++ b/src/xxh3.rs
@@ -117,7 +117,7 @@ pub fn hash128_with_secret(data: &[u8], secret: &[u8]) -> u128 {
 /// Calculates the 64-bit hash.
 #[cfg_attr(feature = "serialize", derive(Deserialize, Serialize))]
 #[cfg_attr(feature = "mem_dbg", derive(mem_dbg::MemSize, mem_dbg::MemDbg))]
-#[derive(Clone, Default)]
+#[derive(Clone, Default, Eq, PartialEq, Debug)]
 pub struct Hash64(State);
 
 impl Hash64 {
@@ -145,7 +145,7 @@ impl Hasher for Hash64 {
 /// Calculates the 128-bit hash.
 #[cfg_attr(feature = "serialize", derive(Deserialize, Serialize))]
 #[cfg_attr(feature = "mem_dbg", derive(mem_dbg::MemSize, mem_dbg::MemDbg))]
-#[derive(Clone, Default)]
+#[derive(Clone, Default, Eq, PartialEq, Debug)]
 pub struct Hash128(State);
 
 impl Hash128 {
@@ -204,8 +204,8 @@ const SECRET: Secret = Secret([
 ]);
 
 #[repr(align(64))]
-#[derive(Clone)]
 #[cfg_attr(feature = "mem_dbg", derive(mem_dbg::MemSize, mem_dbg::MemDbg))]
+#[derive(Clone, Eq, PartialEq, Debug)]
 struct Secret([u8; SECRET_DEFAULT_SIZE]);
 
 const_assert_eq!(mem::size_of::<Secret>() % 16, 0);
@@ -293,19 +293,19 @@ cfg_if! {
         #[repr(align(32))]
         #[cfg_attr(feature = "serialize", derive(Deserialize, Serialize))]
         #[cfg_attr(feature = "mem_dbg", derive(mem_dbg::MemSize, mem_dbg::MemDbg))]
-        #[derive(Clone)]
+        #[derive(Clone, Debug, Eq, PartialEq)]
         struct Acc([u64; ACC_NB]);
     } else if #[cfg(target_feature = "sse2")] {
         #[repr(align(16))]
         #[cfg_attr(feature = "serialize", derive(Deserialize, Serialize))]
         #[cfg_attr(feature = "mem_dbg", derive(mem_dbg::MemSize, mem_dbg::MemDbg))]
-        #[derive(Clone)]
+        #[derive(Clone, Debug, Eq, PartialEq)]
         struct Acc([u64; ACC_NB]);
     } else {
         #[repr(align(8))]
         #[cfg_attr(feature = "serialize", derive(Deserialize, Serialize))]
         #[cfg_attr(feature = "mem_dbg", derive(mem_dbg::MemSize, mem_dbg::MemDbg))]
-        #[derive(Clone)]
+        #[derive(Clone, Debug, Eq, PartialEq)]
         struct Acc([u64; ACC_NB]);
     }
 }
@@ -856,7 +856,7 @@ const_assert_eq!(INTERNAL_BUFFER_SIZE % STRIPE_LEN, 0);
 #[repr(align(64))]
 #[cfg_attr(feature = "serialize", derive(Deserialize, Serialize))]
 #[cfg_attr(feature = "mem_dbg", derive(mem_dbg::MemSize, mem_dbg::MemDbg))]
-#[derive(Clone)]
+#[derive(Clone, Eq, PartialEq, Debug)]
 struct State {
     acc: Acc,
     secret: With,
@@ -868,7 +868,7 @@ struct State {
 
 #[cfg_attr(feature = "serialize", derive(Deserialize, Serialize))]
 #[cfg_attr(feature = "mem_dbg", derive(mem_dbg::MemSize, mem_dbg::MemDbg))]
-#[derive(Clone)]
+#[derive(Clone, Debug, Eq, PartialEq)]
 enum With {
     Default(Secret),
     Custom(Secret),