diff --git a/Package.resolved b/Package.resolved
deleted file mode 100644
index a151fb5..0000000
--- a/Package.resolved
+++ /dev/null
@@ -1,50 +0,0 @@
-{
-  "pins" : [
-    {
-      "identity" : "cryptoswift",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/krzyzanowskim/CryptoSwift.git",
-      "state" : {
-        "revision" : "7892a123f7e8d0fe62f9f03728b17bbd4f94df5c",
-        "version" : "1.8.1"
-      }
-    },
-    {
-      "identity" : "secp256k1.swift",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/GigaBitcoin/secp256k1.swift",
-      "state" : {
-        "revision" : "1a14e189def5eaa92f839afdd2faad8e43b61a6e",
-        "version" : "0.12.2"
-      }
-    },
-    {
-      "identity" : "swift-collections",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/apple/swift-collections.git",
-      "state" : {
-        "revision" : "3d2dc41a01f9e49d84f0a3925fb858bed64f702d",
-        "version" : "1.1.2"
-      }
-    },
-    {
-      "identity" : "swift-docc-plugin",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/apple/swift-docc-plugin.git",
-      "state" : {
-        "revision" : "9b1258905c21fc1b97bf03d1b4ca12c4ec4e5fda",
-        "version" : "1.2.0"
-      }
-    },
-    {
-      "identity" : "swift-docc-symbolkit",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/apple/swift-docc-symbolkit",
-      "state" : {
-        "revision" : "b45d1f2ed151d057b54504d653e0da5552844e34",
-        "version" : "1.0.0"
-      }
-    }
-  ],
-  "version" : 2
-}
diff --git a/Package.swift b/Package.swift
index 642ead3..d643cc3 100644
--- a/Package.swift
+++ b/Package.swift
@@ -15,10 +15,10 @@ let package = Package(
     dependencies: [
         // Dependencies declare other packages that this package depends on.
         // .package(url: /* package url */, from: "1.0.0"),
-        .package(url: "https://github.com/apple/swift-docc-plugin.git", from: "1.0.0"),
-        .package(url: "https://github.com/GigaBitcoin/secp256k1.swift", from: "0.12.2"),
-        .package(url: "https://github.com/krzyzanowskim/CryptoSwift.git", .upToNextMajor(from: "1.8.1")),
-        .package(url: "https://github.com/apple/swift-collections.git", .upToNextMajor(from: "1.1.2"))
+        .package(url: "https://github.com/apple/swift-docc-plugin.git", .upToNextMajor(from: "1.4.3")),
+        .package(url: "https://github.com/GigaBitcoin/secp256k1.swift", exact: "0.12.2"),
+        .package(url: "https://github.com/krzyzanowskim/CryptoSwift.git", .upToNextMajor(from: "1.8.4")),
+        .package(url: "https://github.com/apple/swift-collections.git", .upToNextMajor(from: "1.1.4"))
     ],
     targets: [
         // Targets are the basic building blocks of a package. A target can define a module or a test suite.