diff --git a/Cargo.lock b/Cargo.lock
index 272093a..25aad95 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -694,7 +694,7 @@ dependencies = [
 
 [[package]]
 name = "serde-firestore-value"
-version = "0.5.4"
+version = "0.6.0"
 dependencies = [
  "anyhow",
  "chrono",
diff --git a/Cargo.toml b/Cargo.toml
index 0b60700..119219c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "serde-firestore-value"
-version = "0.5.4"
+version = "0.6.0"
 authors = ["bouzuya <m@bouzuya.net>"]
 description = "A serde (de)serializer using Firestore Value as its data format"
 edition = "2021"