diff --git a/.travis.yml b/.travis.yml
index 3a17920..fd89380 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,7 @@ php:
   - 5.6
   - 7.0
   - 7.1
-  - nightly
+  - 7.3
 
 before_script:
   - composer install
diff --git a/Dockerfile b/Dockerfile
index 852e82b..7613c08 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -17,6 +17,9 @@ RUN docker-php-ext-install -j$(nproc) zip \
     && pecl install grpc \
     && docker-php-ext-enable grpc
 
+RUN pecl install protobuf \
+    && docker-php-ext-enable protobuf
+
 # Composer
 ENV COMPOSER_HOME /composer
 ENV PATH /composer/vendor/bin:$PATH
@@ -28,13 +31,14 @@ RUN curl -o /tmp/composer-setup.php https://getcomposer.org/installer \
 
 # Install Composer Application Dependencies
 COPY composer.json /opt/php-pubsub/
-RUN composer install --no-autoloader --no-scripts --no-interaction \
-    && composer require google/proto-client-php ^0.10.0 \
-    && composer require google/gax
+RUN composer install --no-autoloader --no-scripts --no-interaction
 
 COPY src /opt/php-pubsub/src
 COPY your-gcloud-key.json /opt/php-pubsub
 COPY examples /opt/php-pubsub/examples
+COPY phpunit.php /opt/php-pubsub
+COPY phpunit.xml /opt/php-pubsub
+COPY tests /opt/php-pubsub/tests
 
 RUN composer dump-autoload --no-interaction
 
diff --git a/changelog.md b/changelog.md
index c2cf547..5ab7401 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 5.1.0 - 2019-02-28
+
+* Bump up google/cloud requirement to ^0.95.0
+
 ## 5.0.1 - 2018-07-27
 
 * Allow setting of maximum number of messages to pull option
diff --git a/composer.json b/composer.json
index b601e96..665cdd9 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
   "require": {
     "php": ">=5.6.0",
     "superbalist/php-pubsub": "^2.0",
-    "google/cloud": "^0.33.0|^0.34.0|^0.35.0"
+    "google/cloud": "^0.95.0"
   },
   "autoload": {
     "psr-4": {