diff --git a/Cargo.lock b/Cargo.lock
index 174751d..3049bae 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -525,7 +525,7 @@ checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
 
 [[package]]
 name = "mmdb-grpc"
-version = "0.5.5"
+version = "0.5.6"
 dependencies = [
  "chrono",
  "clap 3.2.2",
diff --git a/Cargo.toml b/Cargo.toml
index 1623c76..79060ba 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "mmdb-grpc"
-version = "0.5.5"
+version = "0.5.6"
 authors = ["Takeru Sato <type.in.type@gmail.com>"]
 edition = "2018"
 description = "The gRPC service that provides a query to Maxmind's GeoLite2 databases"