diff --git a/assets/js/deserializer.mjs b/assets/js/deserializer.mjs
index 285405c61..60ecc8a7f 100644
--- a/assets/js/deserializer.mjs
+++ b/assets/js/deserializer.mjs
@@ -10,6 +10,10 @@ export default class Deserializer {
           return Type.atom(value.slice(9));
         }
 
+        if (value.startsWith("__bigint__:")) {
+          return BigInt(value.slice(11));
+        }
+
         if (value.startsWith("__binary__:")) {
           return Type.bitstring(value.slice(11));
         }
diff --git a/test/javascript/deserializer_test.mjs b/test/javascript/deserializer_test.mjs
index 24e1c00b8..01e0204a9 100644
--- a/test/javascript/deserializer_test.mjs
+++ b/test/javascript/deserializer_test.mjs
@@ -229,5 +229,30 @@ describe("Deserializer", () => {
         });
       });
     });
+
+    describe("JS terms", () => {
+      describe("BigInt", () => {
+        const bigint = 123n;
+
+        it("top-level", () => {
+          const serialized = serialize(bigint);
+
+          assert.equal(deserialize(serialized), bigint);
+        });
+
+        it("nested", () => {
+          const term = {a: bigint, b: 2};
+          const serialized = serialize(term);
+
+          assert.deepStrictEqual(deserialize(serialized), term);
+        });
+
+        it("not versioned", () => {
+          const serialized = serialize(bigint, true, false);
+
+          assert.equal(deserialize(serialized, false), bigint);
+        });
+      });
+    });
   });
 });