diff --git a/composer.lock b/composer.lock
index bd5ed773..5499202f 100644
--- a/composer.lock
+++ b/composer.lock
@@ -59,16 +59,16 @@
         },
         {
             "name": "aws/aws-sdk-php",
-            "version": "3.18.19",
+            "version": "3.18.21",
             "source": {
                 "type": "git",
                 "url": "https://github.com/aws/aws-sdk-php.git",
-                "reference": "2ffb032afe91b143293f75b48ec7593659c66ddb"
+                "reference": "db88adc1569789e7d680809f51a62d2bd3410216"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/aws/aws-sdk-php/zipball/2ffb032afe91b143293f75b48ec7593659c66ddb",
-                "reference": "2ffb032afe91b143293f75b48ec7593659c66ddb",
+                "url": "https://api.github.com/repos/aws/aws-sdk-php/zipball/db88adc1569789e7d680809f51a62d2bd3410216",
+                "reference": "db88adc1569789e7d680809f51a62d2bd3410216",
                 "shasum": ""
             },
             "require": {
@@ -135,7 +135,7 @@
                 "s3",
                 "sdk"
             ],
-            "time": "2016-06-21 21:41:45"
+            "time": "2016-06-27 22:52:29"
         },
         {
             "name": "barnabywalters/mf-cleaner",
@@ -640,16 +640,16 @@
         },
         {
             "name": "guzzlehttp/psr7",
-            "version": "1.3.0",
+            "version": "1.3.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/psr7.git",
-                "reference": "31382fef2889136415751badebbd1cb022a4ed72"
+                "reference": "5c6447c9df362e8f8093bda8f5d8873fe5c7f65b"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/psr7/zipball/31382fef2889136415751badebbd1cb022a4ed72",
-                "reference": "31382fef2889136415751badebbd1cb022a4ed72",
+                "url": "https://api.github.com/repos/guzzle/psr7/zipball/5c6447c9df362e8f8093bda8f5d8873fe5c7f65b",
+                "reference": "5c6447c9df362e8f8093bda8f5d8873fe5c7f65b",
                 "shasum": ""
             },
             "require": {
@@ -665,7 +665,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.0-dev"
+                    "dev-master": "1.4-dev"
                 }
             },
             "autoload": {
@@ -694,7 +694,7 @@
                 "stream",
                 "uri"
             ],
-            "time": "2016-04-13 19:56:01"
+            "time": "2016-06-24 23:00:38"
         },
         {
             "name": "indieauth/client",