diff --git a/composer.json b/composer.json
index 9f78aae..ca3c826 100644
--- a/composer.json
+++ b/composer.json
@@ -20,9 +20,9 @@
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-    "lessmore92/php-ripple-binary-codec": "v1.0.0",
-    "guzzlehttp/guzzle": "7.0"
+    "lessmore92/php-ripple-keypairs": "^v1.0",
+    "lessmore92/php-ripple-binary-codec": "^v1.0",
+    "guzzlehttp/guzzle": "^6.3"
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diff --git a/composer.lock b/composer.lock
index ecdb430..dd8c1c6 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,48 +4,41 @@
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-    "content-hash": "5dff89a04f20c8ad6a318535f075c53c",
+    "content-hash": "0e7b4e67c401145a30310799db77013c",
     "packages": [
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             "name": "guzzlehttp/guzzle",
-            "version": "7.0.0",
+            "version": "6.5.x-dev",
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                 "url": "https://github.com/guzzle/guzzle.git",
-                "reference": "414c24961042f6616fb43e23fa69a785f9fc053e"
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-            "provide": {
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+                "php": ">=5.5",
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@@ -65,11 +58,6 @@
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@@ -80,16 +68,36 @@
                 "framework",
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                 "web service"
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-                "source": "https://github.com/guzzle/guzzle/tree/master"
+                "source": "https://github.com/guzzle/guzzle/tree/6.5"
             },
-            "time": "2020-06-27T08:47:54+00:00"
+            "funding": [
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+                    "type": "github"
+                },
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+                    "url": "https://github.com/Nyholm",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/alexeyshockov",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/gmponos",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/sagikazarmark",
+                    "type": "github"
+                }
+            ],
+            "time": "2020-07-02T06:52:04+00:00"
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@@ -327,16 +335,16 @@
         },
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-            "version": "v1.0.0",
+            "version": "v1.0.1",
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-                "reference": "113e272974a574921145aa962d1d14a5fe0e1761",
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@@ -373,9 +381,9 @@
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-                "source": "https://github.com/lessmore92/php-ripple-address-codec/tree/v1.0.0"
+                "source": "https://github.com/lessmore92/php-ripple-address-codec/tree/v1.0.1"
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-            "time": "2021-01-11T12:32:09+00:00"
+            "time": "2021-01-16T22:30:46+00:00"
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@@ -383,17 +391,17 @@
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-                "reference": "ba059ce05c60a612daabfd5aa1f61091708ce045",
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+                "lessmore92/php-ripple-address-codec": "v1.0.1",
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@@ -425,7 +433,7 @@
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-            "time": "2021-01-13T00:33:25+00:00"
+            "time": "2021-01-18T18:47:04+00:00"
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@@ -433,17 +441,17 @@
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-                "reference": "4b763f72d1f923d191a0cee604f48f4eec966714"
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-                "reference": "4b763f72d1f923d191a0cee604f48f4eec966714",
+                "url": "https://api.github.com/repos/lessmore92/php-ripple-keypairs/zipball/b1b85fbfadb260a79240727a8e82fd9f1ab67faf",
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@@ -478,60 +486,7 @@
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-            "support": {
-                "source": "https://github.com/php-fig/http-client/tree/master"
-            },
-            "time": "2020-09-19T09:12:31+00:00"
+            "time": "2021-01-18T18:46:09+00:00"
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@@ -776,6 +731,256 @@
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