diff --git a/Package.resolved b/Package.resolved
index 9fba7460..92d5f16b 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -5,8 +5,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/apple/swift-protobuf.git",
       "state" : {
-        "revision" : "ab3a58b7209a17d781c0d1dbb3e1ff3da306bae8",
-        "version" : "1.20.3"
+        "revision" : "0af9125c4eae12a4973fb66574c53a54962a9e1e",
+        "version" : "1.21.0"
       }
     }
   ],
diff --git a/Package.swift b/Package.swift
index 3aeecf81..667a292e 100644
--- a/Package.swift
+++ b/Package.swift
@@ -43,7 +43,7 @@ let package = Package(
     dependencies: [
         .package(
             url: "https://github.com/apple/swift-protobuf.git",
-            from: "1.20.3"
+            from: "1.21.0"
         ),
     ],
     targets: [