diff --git a/test_suite/tests/test_de.rs b/test_suite/tests/test_de.rs
index 753c721e..9d1d308d 100644
--- a/test_suite/tests/test_de.rs
+++ b/test_suite/tests/test_de.rs
@@ -11,12 +11,15 @@ use std::ops::Bound;
 use std::path::{Path, PathBuf};
 use std::rc::{Rc, Weak as RcWeak};
 use std::sync::atomic::{
-    AtomicBool, AtomicI16, AtomicI32, AtomicI64, AtomicI8, AtomicIsize, AtomicU16, AtomicU32,
-    AtomicU64, AtomicU8, AtomicUsize, Ordering,
+    AtomicBool, AtomicI16, AtomicI32, AtomicI8, AtomicIsize, AtomicU16, AtomicU32, AtomicU8,
+    AtomicUsize, Ordering,
 };
 use std::sync::{Arc, Weak as ArcWeak};
 use std::time::{Duration, UNIX_EPOCH};
 
+#[cfg(not(target_os = "emscripten"))]
+use std::sync::atomic::{AtomicI64, AtomicU64};
+
 use fnv::FnvHasher;
 use serde::de::DeserializeOwned;
 use serde::{Deserialize, Deserializer};
@@ -1172,13 +1175,17 @@ fn test_atomics() {
     test(AtomicI8::load, -127, Token::I8(-127i8));
     test(AtomicI16::load, -510, Token::I16(-510i16));
     test(AtomicI32::load, -131072, Token::I32(-131072i32));
-    test(AtomicI64::load, -8589934592, Token::I64(-8589934592));
     test(AtomicIsize::load, -131072isize, Token::I32(-131072));
     test(AtomicU8::load, 127, Token::U8(127u8));
     test(AtomicU16::load, 510u16, Token::U16(510u16));
     test(AtomicU32::load, 131072u32, Token::U32(131072u32));
-    test(AtomicU64::load, 8589934592u64, Token::U64(8589934592));
     test(AtomicUsize::load, 131072usize, Token::U32(131072));
+
+    #[cfg(not(target_os = "emscripten"))]
+    {
+        test(AtomicI64::load, -8589934592, Token::I64(-8589934592));
+        test(AtomicU64::load, 8589934592u64, Token::U64(8589934592));
+    }
 }
 
 declare_error_tests! {
diff --git a/test_suite/tests/test_ser.rs b/test_suite/tests/test_ser.rs
index c3db0ed7..4c1412c4 100644
--- a/test_suite/tests/test_ser.rs
+++ b/test_suite/tests/test_ser.rs
@@ -10,11 +10,17 @@ use std::num::Wrapping;
 use std::ops::Bound;
 use std::path::{Path, PathBuf};
 use std::rc::{Rc, Weak as RcWeak};
-use std::sync::{atomic, Arc, Weak as ArcWeak};
+use std::sync::atomic::{
+    AtomicBool, AtomicI16, AtomicI32, AtomicI8, AtomicIsize, AtomicU16, AtomicU32, AtomicU8,
+    AtomicUsize,
+};
+use std::sync::{Arc, Weak as ArcWeak};
 use std::time::{Duration, UNIX_EPOCH};
 
 #[cfg(unix)]
 use std::str;
+#[cfg(not(target_os = "emscripten"))]
+use std::sync::atomic::{AtomicI64, AtomicU64};
 
 use fnv::FnvHasher;
 use serde::Serialize;
@@ -485,18 +491,24 @@ declare_tests! {
         ],
     }
     test_atomic {
-        atomic::AtomicBool::new(false) => &[Token::Bool(false)],
-        atomic::AtomicBool::new(true) => &[Token::Bool(true)],
-        atomic::AtomicI8::new(63i8) => &[Token::I8(63i8)],
-        atomic::AtomicI16::new(-318i16) => &[Token::I16(-318i16)],
-        atomic::AtomicI32::new(65792i32) => &[Token::I32(65792i32)],
-        atomic::AtomicI64::new(-4295032832i64) => &[Token::I64(-4295032832i64)],
-        atomic::AtomicIsize::new(-65792isize) => &[Token::I64(-65792i64)],
-        atomic::AtomicU8::new(192u8) => &[Token::U8(192u8)],
-        atomic::AtomicU16::new(510u16) => &[Token::U16(510u16)],
-        atomic::AtomicU32::new(131072u32) => &[Token::U32(131072u32)],
-        atomic::AtomicU64::new(12884901888u64) => &[Token::U64(12884901888u64)],
-        atomic::AtomicUsize::new(655360usize) => &[Token::U64(655360u64)],
+        AtomicBool::new(false) => &[Token::Bool(false)],
+        AtomicBool::new(true) => &[Token::Bool(true)],
+        AtomicI8::new(63i8) => &[Token::I8(63i8)],
+        AtomicI16::new(-318i16) => &[Token::I16(-318i16)],
+        AtomicI32::new(65792i32) => &[Token::I32(65792i32)],
+        AtomicIsize::new(-65792isize) => &[Token::I64(-65792i64)],
+        AtomicU8::new(192u8) => &[Token::U8(192u8)],
+        AtomicU16::new(510u16) => &[Token::U16(510u16)],
+        AtomicU32::new(131072u32) => &[Token::U32(131072u32)],
+        AtomicUsize::new(655360usize) => &[Token::U64(655360u64)],
+    }
+}
+
+#[cfg(not(target_os = "emscripten"))]
+declare_tests! {
+    test_atomic64 {
+        AtomicI64::new(-4295032832i64) => &[Token::I64(-4295032832i64)],
+        AtomicU64::new(12884901888u64) => &[Token::U64(12884901888u64)],
     }
 }