diff --git a/assembly/encoder.ts b/assembly/encoder.ts
index 737326e..eba06e5 100644
--- a/assembly/encoder.ts
+++ b/assembly/encoder.ts
@@ -112,9 +112,7 @@ export class JSONEncoder {
     }
 
     private writeInteger(value: i32): void {
-        // TODO: More efficient encoding
-        let arr: Array<i32> = [value];
-        this.write(arr.toString());
+        this.write(value.toString());
     }
 
     private write(str: string): void {
diff --git a/package-lock.json b/package-lock.json
index 3a9c593..901fc76 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -594,7 +594,7 @@
       "dev": true,
       "requires": {
         "@protobufjs/utf8": "^1.1.0",
-        "binaryen": "55.0.0-nightly.20181130",
+        "binaryen": "63.0.0-nightly.20190107",
         "glob": "^7.1.3",
         "long": "^4.0.0"
       }