diff --git a/Dockerfile b/Dockerfile
index 54e2d4e..6407b1e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 # ================================
 # Build image
 # ================================
-FROM swift:5.6-focal as build
+FROM swift:5.7-focal as build
 
 RUN export DEBIAN_FRONTEND=noninteractive DEBCONF_NONINTERACTIVE_SEEN=true \
     && apt-get -q update \
diff --git a/Package.swift b/Package.swift
index f69be9c..07e04c0 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.6
+// swift-tools-version:5.7
 import PackageDescription
 
 let package = Package(