diff --git a/java/lib/com/google/protobuf/protobuf-java/2.6.1/protobuf-java-2.6.1.jar b/java/lib/com/google/protobuf/protobuf-java/2.6.1/protobuf-java-2.6.1.jar
deleted file mode 100644
index 669e67281..000000000
Binary files a/java/lib/com/google/protobuf/protobuf-java/2.6.1/protobuf-java-2.6.1.jar and /dev/null differ
diff --git a/java/lib/com/google/protobuf/protobuf-java/2.6.1/protobuf-java-2.6.1.pom b/java/lib/com/google/protobuf/protobuf-java/2.6.1/protobuf-java-2.6.1.pom
deleted file mode 100644
index a9f88e001..000000000
--- a/java/lib/com/google/protobuf/protobuf-java/2.6.1/protobuf-java-2.6.1.pom
+++ /dev/null
@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
-  <modelVersion>4.0.0</modelVersion>
-  <groupId>com.google.protobuf</groupId>
-  <artifactId>protobuf-java</artifactId>
-  <version>2.6.1</version>
-  <description>POM was created from install:install-file</description>
-</project>
diff --git a/java/lib/com/google/protobuf/protobuf-java/maven-metadata-local.xml b/java/lib/com/google/protobuf/protobuf-java/maven-metadata-local.xml
deleted file mode 100644
index fdb85172a..000000000
--- a/java/lib/com/google/protobuf/protobuf-java/maven-metadata-local.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<metadata>
-  <groupId>com.google.protobuf</groupId>
-  <artifactId>protobuf-java</artifactId>
-  <versioning>
-    <release>2.6.1</release>
-    <versions>
-      <version>2.6.1</version>
-    </versions>
-    <lastUpdated>20151102180249</lastUpdated>
-  </versioning>
-</metadata>
diff --git a/java/lib/protobuf-javanano-3.0.0-alpha-7.jar b/java/lib/protobuf-javanano-3.0.0-alpha-7.jar
new file mode 100644
index 000000000..c5aa8a1e6
Binary files /dev/null and b/java/lib/protobuf-javanano-3.0.0-alpha-7.jar differ
diff --git a/java/lib/protobuf-javanano-readme.md b/java/lib/protobuf-javanano-readme.md
new file mode 100644
index 000000000..fee2b8f67
--- /dev/null
+++ b/java/lib/protobuf-javanano-readme.md
@@ -0,0 +1,20 @@
+Steps to update the protobuf library version:
+
+- Start by finding a protobuf library version released to Maven Central that has functionality you
+  need, e.g. nano. See http://mvnrepository.com/artifact/com.google.protobuf.
+- Update the protobuf library dependency's `groupId`, `artifactId`, and `version` to match this
+  artifact in all the `pom.xml` files. You can find the files by searching for
+  `<groupId>com.google.protobuf` in the GitHub repository.
+- Download the `.jar` from the Maven Repository,
+  e.g. from http://repo1.maven.org/maven2/com/google/protobuf/nano/protobuf-javanano/3.0.0-alpha-7/,
+  and copy to `java/lib/`, replacing the previous version's `.jar`.
+- See https://github.com/google/protobuf/releases for the release containing the chosen version, and
+  download the `protoc` binary for your machine's architecture from the same release and use this to
+  re-generate `java/libphonenumber/src/com/google/i18n/phonenumbers/nano/Phonemetadata.java` and
+  check in any changes to this file. The command from the root directory is:
+
+  ```
+  protoc --javanano_out=com.google.i18n.phonenumbers.nano:java/libphonenumber/src \
+         resources/phonemetadata.proto \
+         --proto_path=resources
+  ```
diff --git a/java/libphonenumber/pom.xml b/java/libphonenumber/pom.xml
index 9c9b9a262..30774ce95 100644
--- a/java/libphonenumber/pom.xml
+++ b/java/libphonenumber/pom.xml
@@ -29,28 +29,6 @@
       </testResource>
     </testResources>
     <plugins>
-      <plugin>
-        <artifactId>maven-shade-plugin</artifactId>
-        <version>2.4.2</version>
-        <executions>
-          <execution>
-            <phase>package</phase>
-            <goals>
-              <goal>shade</goal>
-            </goals>
-            <configuration>
-              <relocations>
-                <relocation>
-                  <pattern>com.google.protobuf</pattern>
-                  <shadedPattern>
-                    com.google.i18n.phonenumbers.repackaged.com.google.protobuf
-                  </shadedPattern>
-                </relocation>
-              </relocations>
-            </configuration>
-          </execution>
-        </executions>
-      </plugin>
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>animal-sniffer-maven-plugin</artifactId>
@@ -74,17 +52,12 @@
     </plugins>
   </build>
 
-  <repositories>
-    <repository>
-      <id>protobuf-java-lib</id>
-      <url>file://${project.basedir}/../lib</url>
-    </repository>
-  </repositories>
   <dependencies>
     <dependency>
-      <groupId>com.google.protobuf</groupId>
-      <artifactId>protobuf-java</artifactId>
-      <version>2.6.1</version>
+      <groupId>com.google.protobuf.nano</groupId>
+      <artifactId>protobuf-javanano</artifactId>
+      <!-- If updating the version, see instructions in java/lib/protobuf-javanano-readme.md. -->
+      <version>3.0.0-alpha-7</version>
     </dependency>
   </dependencies>
 
diff --git a/java/pending_code_changes.txt b/java/pending_code_changes.txt
index 6efad85da..ae70f7e73 100644
--- a/java/pending_code_changes.txt
+++ b/java/pending_code_changes.txt
@@ -1,3 +1,5 @@
  - Deleted unsupported SingleFilePhoneNumberMetadataProto.
 Code changes:
  - Refactored metadata loading and closed all streams after loading.
+Build changes:
+ - Use protobuf-javanano 3.0.0-alpha-7 from Maven Central.
diff --git a/tools/java/common/pom.xml b/tools/java/common/pom.xml
index 14beba550..10797bc28 100644
--- a/tools/java/common/pom.xml
+++ b/tools/java/common/pom.xml
@@ -51,12 +51,6 @@
     </plugins>
   </build>
 
-  <repositories>
-    <repository>
-      <id>protobuf-java-lib</id>
-      <url>file://${project.basedir}/../../../java/lib</url>
-    </repository>
-  </repositories>
   <dependencies>
     <dependency>
       <groupId>junit</groupId>
@@ -65,9 +59,10 @@
       <scope>test</scope>
     </dependency>
     <dependency>
-      <groupId>com.google.protobuf</groupId>
-      <artifactId>protobuf-java</artifactId>
-      <version>2.6.1</version>
+      <groupId>com.google.protobuf.nano</groupId>
+      <artifactId>protobuf-javanano</artifactId>
+      <!-- If updating the version, see instructions in java/lib/protobuf-javanano-readme.md. -->
+      <version>3.0.0-alpha-7</version>
     </dependency>
   </dependencies>
 
diff --git a/tools/java/cpp-build/pom.xml b/tools/java/cpp-build/pom.xml
index 0f2fb6677..05176f450 100644
--- a/tools/java/cpp-build/pom.xml
+++ b/tools/java/cpp-build/pom.xml
@@ -54,28 +54,6 @@
           </execution>
         </executions>
       </plugin>
-      <!-- Invoke Protocol Buffers compiler to generate Phonemetadata.java. -->
-      <plugin>
-        <groupId>org.codehaus.mojo</groupId>
-        <artifactId>exec-maven-plugin</artifactId>
-        <version>1.4.0</version>
-        <executions>
-          <execution>
-            <phase>generate-sources</phase>
-            <goals>
-              <goal>exec</goal>
-            </goals>
-          </execution>
-        </executions>
-        <configuration>
-          <executable>protoc</executable>
-          <arguments>
-            <argument>--javanano_out=java_package=phonemetadata.proto|com.google.i18n.phonenumbers.nano:../../../java/libphonenumber/src</argument>
-            <argument>../../../resources/phonemetadata.proto</argument>
-            <argument>--proto_path=../../../resources</argument>
-          </arguments>
-        </configuration>
-      </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-jar-plugin</artifactId>
@@ -118,12 +96,6 @@
     </plugins>
   </build>
 
-  <repositories>
-    <repository>
-      <id>protobuf-java-lib</id>
-      <url>file://${project.basedir}/../../../java/lib</url>
-    </repository>
-  </repositories>
   <dependencies>
     <dependency>
       <groupId>junit</groupId>
@@ -132,9 +104,10 @@
       <scope>test</scope>
     </dependency>
     <dependency>
-      <groupId>com.google.protobuf</groupId>
-      <artifactId>protobuf-java</artifactId>
-      <version>2.6.1</version>
+      <groupId>com.google.protobuf.nano</groupId>
+      <artifactId>protobuf-javanano</artifactId>
+      <!-- If updating the version, see instructions in java/lib/protobuf-javanano-readme.md. -->
+      <version>3.0.0-alpha-7</version>
     </dependency>
   </dependencies>
 
diff --git a/tools/java/cpp-build/target/cpp-build-1.0-SNAPSHOT-jar-with-dependencies.jar b/tools/java/cpp-build/target/cpp-build-1.0-SNAPSHOT-jar-with-dependencies.jar
index d96eb40b2..dd3d7efac 100644
Binary files a/tools/java/cpp-build/target/cpp-build-1.0-SNAPSHOT-jar-with-dependencies.jar and b/tools/java/cpp-build/target/cpp-build-1.0-SNAPSHOT-jar-with-dependencies.jar differ
diff --git a/tools/java/java-build/pom.xml b/tools/java/java-build/pom.xml
index 3caa92261..665504bc8 100644
--- a/tools/java/java-build/pom.xml
+++ b/tools/java/java-build/pom.xml
@@ -103,12 +103,6 @@
     </plugins>
   </build>
 
-  <repositories>
-    <repository>
-      <id>protobuf-java-lib</id>
-      <url>file://${project.basedir}/../../../java/lib</url>
-    </repository>
-  </repositories>
   <dependencies>
     <dependency>
       <groupId>junit</groupId>
@@ -117,9 +111,10 @@
       <scope>test</scope>
     </dependency>
     <dependency>
-      <groupId>com.google.protobuf</groupId>
-      <artifactId>protobuf-java</artifactId>
-      <version>2.6.1</version>
+      <groupId>com.google.protobuf.nano</groupId>
+      <artifactId>protobuf-javanano</artifactId>
+      <!-- If updating the version, see instructions in java/lib/protobuf-javanano-readme.md. -->
+      <version>3.0.0-alpha-7</version>
     </dependency>
   </dependencies>
 
diff --git a/tools/java/java-build/target/java-build-1.0-SNAPSHOT-jar-with-dependencies.jar b/tools/java/java-build/target/java-build-1.0-SNAPSHOT-jar-with-dependencies.jar
index 767d62ca0..6b3d054ba 100644
Binary files a/tools/java/java-build/target/java-build-1.0-SNAPSHOT-jar-with-dependencies.jar and b/tools/java/java-build/target/java-build-1.0-SNAPSHOT-jar-with-dependencies.jar differ