diff --git a/datastore/api/composer.json b/datastore/api/composer.json
index 12cc0d8f1f..4685d5ac9d 100644
--- a/datastore/api/composer.json
+++ b/datastore/api/composer.json
@@ -1,10 +1,10 @@
 {
     "require": {
-        "google/cloud": "<2.0"
+        "google/cloud": "~1.0|~0.10"
     },
     "require-dev": {
         "phpunit/phpunit": "~4.8",
-        "google/cloud-tools": "<2.0"
+        "google/cloud-tools": "~1.0|~0.5"
     },
     "autoload": {
         "psr-4": { "Google\\Cloud\\Samples\\Datastore\\": "src" },
diff --git a/datastore/api/composer.lock b/datastore/api/composer.lock
index 306b639821..a3e371d3e4 100644
--- a/datastore/api/composer.lock
+++ b/datastore/api/composer.lock
@@ -4,8 +4,8 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "25df74c37ef8de0a77f4ec3b61daa708",
-    "content-hash": "f4fa56734886b5b811a6346048b3adb3",
+    "hash": "23ff977eebca4dfc0ebf4fdae9c9b881",
+    "content-hash": "73bb877c2f05f502073a5cfe66c42d20",
     "packages": [
         {
             "name": "firebase/php-jwt",