diff --git a/CHANGELOG.md b/CHANGELOG.md
index be9404e0..580a0eed 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,11 @@
 * Copy port from headless test server when using `WASM_BINDGEN_TEST_ADDRESS`.
   [#3873](https://github.com/rustwasm/wasm-bindgen/pull/3873)
 
+* Fix `catch` not being thread-safe.
+  [#3879](https://github.com/rustwasm/wasm-bindgen/pull/3879)
+
+--------------------------------------------------------------------------------
+
 ## [0.2.92](https://github.com/rustwasm/wasm-bindgen/compare/0.2.91...0.2.92)
 
 Released 2024-03-04
diff --git a/crates/cli/tests/reference/anyref-import-catch.wat b/crates/cli/tests/reference/anyref-import-catch.wat
index 48071a31..16adbbe6 100644
--- a/crates/cli/tests/reference/anyref-import-catch.wat
+++ b/crates/cli/tests/reference/anyref-import-catch.wat
@@ -4,10 +4,10 @@
   (type (;2;) (func (param i32)))
   (type (;3;) (func (param i32) (result i32)))
   (import "./reference_test_bg.js" "__wbindgen_init_externref_table" (func (;0;) (type 0)))
-  (func $__wbindgen_exn_store (;1;) (type 2) (param i32))
-  (func $__externref_table_dealloc (;2;) (type 2) (param i32))
-  (func $exported (;3;) (type 2) (param i32))
-  (func $__externref_table_alloc (;4;) (type 1) (result i32))
+  (func $__externref_table_dealloc (;1;) (type 2) (param i32))
+  (func $exported (;2;) (type 2) (param i32))
+  (func $__externref_table_alloc (;3;) (type 1) (result i32))
+  (func $__wbindgen_exn_store (;4;) (type 2) (param i32))
   (func $__wbindgen_add_to_stack_pointer (;5;) (type 3) (param i32) (result i32))
   (table (;0;) 128 externref)
   (memory (;0;) 17)
diff --git a/crates/cli/tests/reference/import-catch.wat b/crates/cli/tests/reference/import-catch.wat
index f291a4a4..614e0b61 100644
--- a/crates/cli/tests/reference/import-catch.wat
+++ b/crates/cli/tests/reference/import-catch.wat
@@ -1,8 +1,8 @@
 (module
   (type (;0;) (func (param i32)))
   (type (;1;) (func (param i32) (result i32)))
-  (func $__wbindgen_exn_store (;0;) (type 0) (param i32))
-  (func $exported (;1;) (type 0) (param i32))
+  (func $exported (;0;) (type 0) (param i32))
+  (func $__wbindgen_exn_store (;1;) (type 0) (param i32))
   (func $__wbindgen_add_to_stack_pointer (;2;) (type 1) (param i32) (result i32))
   (memory (;0;) 17)
   (export "memory" (memory 0))
diff --git a/src/lib.rs b/src/lib.rs
index 2f9e48e6..fdef0e8d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1687,26 +1687,28 @@ pub mod __rt {
         crate::externref::link_intrinsics();
     }
 
-    static mut GLOBAL_EXNDATA: [u32; 2] = [0; 2];
+    std::thread_local! {
+        static GLOBAL_EXNDATA: Cell<[u32; 2]> = Cell::new([0; 2]);
+    }
 
     #[no_mangle]
     pub unsafe extern "C" fn __wbindgen_exn_store(idx: u32) {
-        debug_assert_eq!(GLOBAL_EXNDATA[0], 0);
-        GLOBAL_EXNDATA[0] = 1;
-        GLOBAL_EXNDATA[1] = idx;
+        GLOBAL_EXNDATA.with(|data| {
+            debug_assert_eq!(data.get()[0], 0);
+            data.set([1, idx]);
+        });
     }
 
     pub fn take_last_exception() -> Result<(), super::JsValue> {
-        unsafe {
-            let ret = if GLOBAL_EXNDATA[0] == 1 {
-                Err(super::JsValue::_new(GLOBAL_EXNDATA[1]))
+        GLOBAL_EXNDATA.with(|data| {
+            let ret = if data.get()[0] == 1 {
+                Err(super::JsValue::_new(data.get()[1]))
             } else {
                 Ok(())
             };
-            GLOBAL_EXNDATA[0] = 0;
-            GLOBAL_EXNDATA[1] = 0;
+            data.set([0, 0]);
             ret
-        }
+        })
     }
 
     /// An internal helper trait for usage in `#[wasm_bindgen]` on `async`