diff --git a/google-api-grpc/pom.xml b/google-api-grpc/pom.xml
index ad800bfc61c3..6a0fd7ceed81 100644
--- a/google-api-grpc/pom.xml
+++ b/google-api-grpc/pom.xml
@@ -14,6 +14,7 @@
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <project.javadoc.protobufBaseURL>https://googleapis.dev/java/google-api-grpc/latest</project.javadoc.protobufBaseURL>
+    <grpc.version>1.23.0</grpc.version>
   </properties>
   <developers>
     <developer>
@@ -101,22 +102,19 @@
   <dependencyManagement>
     <dependencies>
       <!-- Common dependencies -->
-      <dependency>
-        <groupId>com.google.protobuf</groupId>
-        <artifactId>protobuf-java</artifactId>
-        <version>3.7.1</version>
-      </dependency>
       <dependency>
         <groupId>io.grpc</groupId>
-        <artifactId>grpc-stub</artifactId>
-        <version>1.23.0</version>
-        <scope>compile</scope>
+        <artifactId>grpc-bom</artifactId>
+        <version>${grpc.version}</version>
+        <type>pom</type>
+        <scope>import</scope>
       </dependency>
       <dependency>
-        <groupId>io.grpc</groupId>
-        <artifactId>grpc-protobuf</artifactId>
-        <version>1.23.0</version>
-        <scope>compile</scope>
+        <groupId>com.google.protobuf</groupId>
+        <artifactId>protobuf-bom</artifactId>
+        <version>3.9.1</version>
+        <type>pom</type>
+        <scope>import</scope>
       </dependency>
       <dependency>
         <groupId>com.google.api</groupId>
diff --git a/google-cloud-bom/pom.xml b/google-cloud-bom/pom.xml
index afdccc158cf2..84a4ed711b22 100644
--- a/google-cloud-bom/pom.xml
+++ b/google-cloud-bom/pom.xml
@@ -168,7 +168,7 @@
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>gax-bom</artifactId>
-        <version>1.47.1</version>
+        <version>1.48.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
diff --git a/google-cloud-clients/google-cloud-pubsub/src/test/java/com/google/cloud/pubsub/v1/OpenCensusUtilTest.java b/google-cloud-clients/google-cloud-pubsub/src/test/java/com/google/cloud/pubsub/v1/OpenCensusUtilTest.java
index d4230003907d..afa316220681 100644
--- a/google-cloud-clients/google-cloud-pubsub/src/test/java/com/google/cloud/pubsub/v1/OpenCensusUtilTest.java
+++ b/google-cloud-clients/google-cloud-pubsub/src/test/java/com/google/cloud/pubsub/v1/OpenCensusUtilTest.java
@@ -43,6 +43,7 @@
 import java.util.Collection;
 import java.util.List;
 import java.util.concurrent.TimeUnit;
+import org.junit.BeforeClass;
 import org.junit.Test;
 
 /** Tests for {@link OpenCensusUtil}. */
@@ -53,6 +54,11 @@ public class OpenCensusUtilTest {
   private static final TagValue TEST_TAG_VAL = TagValue.create("TEST_TAG_VAL");
   private static final String TEST_PARENT_LINK_NAME = "TEST_PARENT_LINK";
 
+  @BeforeClass
+  public static void configureOpenCensus() {
+    Tracing.getExportComponent().getRunningSpanStore().setMaxNumberOfSpans(5);
+  }
+
   // Verifies that trace contexts propagated as an attribute are set as the parent link in the
   // message receiver and that the tag context is not change (for now).
   @Test
@@ -148,7 +154,7 @@ private void assertSpanCount(int expected) {
         }
         Thread.yield();
         if (watch.elapsed(TimeUnit.SECONDS) >= 5) {
-          fail();
+          fail("failed to get spans in 5 seconds");
         }
       }
     }
diff --git a/google-cloud-clients/pom.xml b/google-cloud-clients/pom.xml
index 147c38081733..f20d7148e637 100644
--- a/google-cloud-clients/pom.xml
+++ b/google-cloud-clients/pom.xml
@@ -158,15 +158,15 @@
     <!-- make sure to keep gax version in sync with google-cloud-bom -->
     <gax.version>1.47.1</gax.version>
     <api.common.java.version>1.8.1</api.common.java.version>
-    <google.auth.version>0.16.2</google.auth.version>
     <grpc.version>1.23.0</grpc.version>
+    <google.auth.version>0.17.0</google.auth.version>
     <!-- We are currently using the *-android version to support JDK7. -->
     <guava.version>28.0-android</guava.version>
     <http-client-bom.version>1.31.0</http-client-bom.version>
     <oauth-client.version>1.30.1</oauth-client.version>
     <protobuf.version>3.9.1</protobuf.version>
     <!-- make sure to keep opencensus version in sync with grpc -->
-    <opencensus.version>0.21.0</opencensus.version>
+    <opencensus.version>0.23.0</opencensus.version>
     <!-- make sure to keep version in sync with google-http-client -->
     <apache.httpclient.version>4.5.5</apache.httpclient.version>
     <!-- test dependency versions -->
@@ -211,6 +211,21 @@
         <type>pom</type>
         <scope>import</scope>
       </dependency>
+      <dependency>
+        <groupId>io.grpc</groupId>
+        <artifactId>grpc-bom</artifactId>
+        <version>${grpc.version}</version>
+        <type>pom</type>
+        <scope>import</scope>
+      </dependency>
+      <dependency>
+        <groupId>com.google.protobuf</groupId>
+        <artifactId>protobuf-bom</artifactId>
+        <version>${protobuf.version}</version>
+        <type>pom</type>
+        <scope>import</scope>
+      </dependency>
+
       <dependency>
         <groupId>com.google.apis</groupId>
         <artifactId>google-api-services-bigquery</artifactId>
@@ -285,61 +300,12 @@
         <artifactId>json</artifactId>
         <version>20180813</version>
       </dependency>
-      <dependency>
-        <groupId>io.grpc</groupId>
-        <artifactId>grpc-core</artifactId>
-        <version>${grpc.version}</version>
-      </dependency>
-      <dependency>
-        <groupId>io.grpc</groupId>
-        <artifactId>grpc-netty</artifactId>
-        <version>${grpc.version}</version>
-      </dependency>
-      <dependency>
-        <groupId>io.grpc</groupId>
-        <artifactId>grpc-netty-shaded</artifactId>
-        <version>${grpc.version}</version>
-      </dependency>
-      <dependency>
-        <groupId>io.grpc</groupId>
-        <artifactId>grpc-stub</artifactId>
-        <version>${grpc.version}</version>
-      </dependency>
-      <dependency>
-        <groupId>io.grpc</groupId>
-        <artifactId>grpc-auth</artifactId>
-        <version>${grpc.version}</version>
-      </dependency>
-      <dependency>
-        <groupId>io.grpc</groupId>
-        <artifactId>grpc-protobuf</artifactId>
-        <version>${grpc.version}</version>
-      </dependency>
-      <dependency>
-        <groupId>io.grpc</groupId>
-        <artifactId>grpc-context</artifactId>
-        <version>${grpc.version}</version>
-      </dependency>
-      <dependency>
-        <groupId>io.grpc</groupId>
-        <artifactId>grpc-testing</artifactId>
-        <version>${grpc.version}</version>
-      </dependency>
+
       <dependency>
         <groupId>com.google.code.findbugs</groupId>
         <artifactId>jsr305</artifactId>
         <version>3.0.2</version>
       </dependency>
-      <dependency>
-        <groupId>com.google.protobuf</groupId>
-        <artifactId>protobuf-java</artifactId>
-        <version>${protobuf.version}</version>
-      </dependency>
-      <dependency>
-        <groupId>com.google.protobuf</groupId>
-        <artifactId>protobuf-java-util</artifactId>
-        <version>${protobuf.version}</version>
-      </dependency>
       <dependency>
         <groupId>com.google.guava</groupId>
         <artifactId>guava</artifactId>
@@ -348,7 +314,7 @@
       <dependency>
         <groupId>com.google.auto.value</groupId>
         <artifactId>auto-value</artifactId>
-        <version>1.4</version>
+        <version>${autovalue.version}</version>
       </dependency>
       <dependency>
         <groupId>io.opencensus</groupId>
@@ -952,6 +918,44 @@
       </build>
     </profile>
 
+    <profile>
+      <id>autovalue-java7</id>
+      <activation>
+        <jdk>1.7</jdk>
+      </activation>
+      <properties>
+        <autovalue.version>1.4</autovalue.version>
+      </properties>
+      <dependencyManagement>
+        <dependencies>
+          <dependency>
+            <groupId>com.google.auto.value</groupId>
+            <artifactId>auto-value-annotations</artifactId>
+            <version>1.6.6</version>
+          </dependency>
+        </dependencies>
+      </dependencyManagement>
+    </profile>
+
+    <profile>
+      <id>autovalue-java8</id>
+      <activation>
+        <jdk>[1.8,)</jdk>
+      </activation>
+      <properties>
+        <autovalue.version>1.6.6</autovalue.version>
+      </properties>
+      <dependencyManagement>
+        <dependencies>
+          <dependency>
+            <groupId>com.google.auto.value</groupId>
+            <artifactId>auto-value-annotations</artifactId>
+            <version>${autovalue.version}</version>
+          </dependency>
+        </dependencies>
+      </dependencyManagement>
+    </profile>
+
     <profile>
       <!-- Only run checkstyle plugin on Java 8+ (checkstyle artifact only supports Java 8+) -->
       <id>checkstyle-tests</id>
diff --git a/google-cloud-testing/google-cloud-conformance-tests/pom.xml b/google-cloud-testing/google-cloud-conformance-tests/pom.xml
index 2e949c9bdd22..e78ec10905df 100644
--- a/google-cloud-testing/google-cloud-conformance-tests/pom.xml
+++ b/google-cloud-testing/google-cloud-conformance-tests/pom.xml
@@ -14,7 +14,7 @@
   </parent>
 
   <properties>
-    <protobuf.version>3.7.1</protobuf.version>
+    <protobuf.version>3.9.1</protobuf.version>
   </properties>
 
   <dependencies>
diff --git a/google-cloud-testing/pom.xml b/google-cloud-testing/pom.xml
index 18067daee4e9..f87a4c449c8b 100644
--- a/google-cloud-testing/pom.xml
+++ b/google-cloud-testing/pom.xml
@@ -59,7 +59,7 @@
         <groupId>com.google.guava</groupId>
         <artifactId>guava-testlib</artifactId>
         <!-- We are currently using the *-android version to support JDK7. -->
-        <version>26.0-android</version>
+        <version>28.0-android</version>
       </dependency>
       <dependency>
         <groupId>junit</groupId>
diff --git a/google-cloud-util/google-cloud-compat-checker/pom.xml b/google-cloud-util/google-cloud-compat-checker/pom.xml
index b3b9dda2904f..e0d6fdfb6291 100644
--- a/google-cloud-util/google-cloud-compat-checker/pom.xml
+++ b/google-cloud-util/google-cloud-compat-checker/pom.xml
@@ -18,7 +18,7 @@
     <site.installationModule>google-cloud-compat-checker</site.installationModule>
     <grpc.version>1.23.0</grpc.version>
     <!-- We are currently using the *-android version to support JDK7. -->
-    <guava.version>27.1-android</guava.version>
+    <guava.version>28.0-android</guava.version>
   </properties>
   <dependencies>
     <dependency>