diff --git a/README.md b/README.md
index 77ae50e..3fe80b9 100644
--- a/README.md
+++ b/README.md
@@ -62,4 +62,4 @@ $ `cd translator && ./run/run-java --file=../test/test-dir/entities.yml --out=..
 
 Updating the version in all files:
 
-$ `./util/update-vesion 1.0.1 1.1.0`
+$ `./util/update-version 1.0.1 1.1.0`
diff --git a/translator/src/genKotlin.kt b/translator/src/genKotlin.kt
index 3ec4fe1..b5f8a23 100644
--- a/translator/src/genKotlin.kt
+++ b/translator/src/genKotlin.kt
@@ -94,10 +94,18 @@ fun genKotlinFieldDefault(type: String): String {
     if (type == "Bool") {
         return "false"
     }
+    // `Double` -> `0`
+    if (type == "Double") {
+        return "0"
+    }
     // `Int` -> `0`
     if (type == "Int") {
         return "0"
     }
+    // `Long` -> `0`
+    if (type == "Long") {
+        return "0"
+    }
     // `String` -> `""`
     if (type == "String") {
         return "\"\""
@@ -148,6 +156,14 @@ fun genKotlinFieldType(type: String): String {
     if (type == "Bool") {
         return "Boolean"
     }
+    // `Double` -> `Double`
+    if (type == "Double") {
+        return "Double"
+    }
+    // `Long` -> `Long`
+    if (type == "Long") {
+        return "Long"
+    }
     // `[Type]` -> `Array<Type>`
     if (
         type.startsWith("[") &&