diff --git a/android/guava-bom/pom.xml b/android/guava-bom/pom.xml
index 8fde93d1a75a4..e6a5d9f132acd 100644
--- a/android/guava-bom/pom.xml
+++ b/android/guava-bom/pom.xml
@@ -8,7 +8,7 @@
 
   <groupId>com.google.guava</groupId>
   <artifactId>guava-bom</artifactId>
-  <version>HEAD-android-SNAPSHOT</version>
+  <version>1.0-HEAD-android-SNAPSHOT</version>
   <packaging>pom</packaging>
   
   <parent>
diff --git a/android/guava-testlib/pom.xml b/android/guava-testlib/pom.xml
index 33dc15799d00b..8dc3771c6e0c5 100644
--- a/android/guava-testlib/pom.xml
+++ b/android/guava-testlib/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.guava</groupId>
     <artifactId>guava-parent</artifactId>
-    <version>HEAD-android-SNAPSHOT</version>
+    <version>1.0-HEAD-android-SNAPSHOT</version>
   </parent>
   <artifactId>guava-testlib</artifactId>
   <name>Guava Testing Library</name>
diff --git a/android/guava-tests/pom.xml b/android/guava-tests/pom.xml
index bf9bec45c651d..f9b485f5e2cfe 100644
--- a/android/guava-tests/pom.xml
+++ b/android/guava-tests/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.guava</groupId>
     <artifactId>guava-parent</artifactId>
-    <version>HEAD-android-SNAPSHOT</version>
+    <version>1.0-HEAD-android-SNAPSHOT</version>
   </parent>
   <artifactId>guava-tests</artifactId>
   <name>Guava Unit Tests</name>
diff --git a/android/guava/pom.xml b/android/guava/pom.xml
index 501b3967264c0..ca267e58ef527 100644
--- a/android/guava/pom.xml
+++ b/android/guava/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.google.guava</groupId>
     <artifactId>guava-parent</artifactId>
-    <version>HEAD-android-SNAPSHOT</version>
+    <version>1.0-HEAD-android-SNAPSHOT</version>
   </parent>
   <artifactId>guava</artifactId>
   <packaging>bundle</packaging>
diff --git a/android/pom.xml b/android/pom.xml
index 96ea9fa41df5c..c8e3e357322f9 100644
--- a/android/pom.xml
+++ b/android/pom.xml
@@ -6,7 +6,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.guava</groupId>
   <artifactId>guava-parent</artifactId>
-  <version>HEAD-android-SNAPSHOT</version>
+  <version>1.0-HEAD-android-SNAPSHOT</version>
   <packaging>pom</packaging>
   <name>Guava Maven Parent</name>
   <description>Parent for guava artifacts</description>
diff --git a/guava-bom/pom.xml b/guava-bom/pom.xml
index 8c5ea2ec035f3..af7c956adbaaf 100644
--- a/guava-bom/pom.xml
+++ b/guava-bom/pom.xml
@@ -8,7 +8,7 @@
 
   <groupId>com.google.guava</groupId>
   <artifactId>guava-bom</artifactId>
-  <version>HEAD-jre-SNAPSHOT</version>
+  <version>1.0-HEAD-jre-SNAPSHOT</version>
   <packaging>pom</packaging>
   
   <parent>
diff --git a/guava-gwt/pom.xml b/guava-gwt/pom.xml
index 86fa4b971aa90..a6f9ee291655a 100644
--- a/guava-gwt/pom.xml
+++ b/guava-gwt/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.guava</groupId>
     <artifactId>guava-parent</artifactId>
-    <version>HEAD-jre-SNAPSHOT</version>
+    <version>1.0-HEAD-jre-SNAPSHOT</version>
   </parent>
   <artifactId>guava-gwt</artifactId>
   <name>Guava GWT compatible libs</name>
diff --git a/guava-testlib/pom.xml b/guava-testlib/pom.xml
index f60890e78e7aa..cd2bc969833b1 100644
--- a/guava-testlib/pom.xml
+++ b/guava-testlib/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.guava</groupId>
     <artifactId>guava-parent</artifactId>
-    <version>HEAD-jre-SNAPSHOT</version>
+    <version>1.0-HEAD-jre-SNAPSHOT</version>
   </parent>
   <artifactId>guava-testlib</artifactId>
   <name>Guava Testing Library</name>
diff --git a/guava-tests/pom.xml b/guava-tests/pom.xml
index 8596221d83161..ca74eb2e2814b 100644
--- a/guava-tests/pom.xml
+++ b/guava-tests/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.guava</groupId>
     <artifactId>guava-parent</artifactId>
-    <version>HEAD-jre-SNAPSHOT</version>
+    <version>1.0-HEAD-jre-SNAPSHOT</version>
   </parent>
   <artifactId>guava-tests</artifactId>
   <name>Guava Unit Tests</name>
diff --git a/guava/pom.xml b/guava/pom.xml
index f0e50c58bb00a..413f15f767ce0 100644
--- a/guava/pom.xml
+++ b/guava/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.google.guava</groupId>
     <artifactId>guava-parent</artifactId>
-    <version>HEAD-jre-SNAPSHOT</version>
+    <version>1.0-HEAD-jre-SNAPSHOT</version>
   </parent>
   <artifactId>guava</artifactId>
   <packaging>jar</packaging>
@@ -62,9 +62,11 @@
         <configuration>
           <archive>
             <manifestEntries>
-              <Automatic-Module-Name>com.google.common</Automatic-Module-Name>
+              <Multi-Release>true</Multi-Release>
             </manifestEntries>
           </archive>
+          <!-- Exclude root `module-info.class` -->
+          <excludes>/module-info.class</excludes>
         </configuration>
       </plugin>
       <plugin>
@@ -100,6 +102,44 @@
       </plugin>
       <plugin>
         <artifactId>maven-compiler-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>default-compile</id>
+            <configuration>
+              <source>1.8</source>
+              <target>1.8</target>
+              <excludes>
+                <exclude>module-info.java</exclude>
+              </excludes>
+            </configuration>
+          </execution>
+          <execution>
+            <id>compile-java-9</id>
+            <phase>compile</phase>
+            <goals>
+              <goal>compile</goal>
+            </goals>
+            <configuration>
+              <release>9</release>
+              <compileSourceRoots>
+                <compileSourceRoot>${project.basedir}/src</compileSourceRoot>
+              </compileSourceRoots>
+
+              <!--
+                JPMS needs access to the module sources to complete a modular Java build. We also need to override the
+                base compile settings (in the root `pom.xml`) to enable MRJAR output.
+              -->
+              <compilerArgs combine.self="override" combine.children="append">
+                <arg>-sourcepath</arg>
+                <arg>${project.basedir}/src</arg>
+                <arg>--add-reads=com.google.common=ALL-UNNAMED</arg>
+                <!-- https://errorprone.info/docs/installation#maven -->
+                <arg>-XDcompilePolicy=simple</arg>
+              </compilerArgs>
+              <multiReleaseOutput>true</multiReleaseOutput>
+            </configuration>
+          </execution>
+        </executions>
       </plugin>
       <plugin>
         <artifactId>maven-source-plugin</artifactId>
diff --git a/guava/src/module-info.java b/guava/src/module-info.java
new file mode 100644
index 0000000000000..e459eb9d9e8ea
--- /dev/null
+++ b/guava/src/module-info.java
@@ -0,0 +1,44 @@
+// GENERATED FILE - DO NOT EDIT
+
+/*
+ * Copyright (C) 2008 The Guava Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Google Guava
+ */
+module com.google.common {
+  requires java.base;
+  requires java.logging;
+  requires jdk.unsupported;
+
+  exports com.google.common.annotations;
+  exports com.google.common.base;
+  exports com.google.common.cache;
+  exports com.google.common.collect;
+  exports com.google.common.escape;
+  exports com.google.common.eventbus;
+  exports com.google.common.graph;
+  exports com.google.common.hash;
+  exports com.google.common.html;
+  exports com.google.common.io;
+  exports com.google.common.math;
+  exports com.google.common.net;
+  exports com.google.common.primitives;
+  exports com.google.common.reflect;
+  exports com.google.common.util.concurrent;
+  exports com.google.common.xml;
+  exports com.google.thirdparty.publicsuffix;
+}
diff --git a/pom.xml b/pom.xml
index e22e870110645..10654cd216c3b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.guava</groupId>
   <artifactId>guava-parent</artifactId>
-  <version>HEAD-jre-SNAPSHOT</version>
+  <version>1.0-HEAD-jre-SNAPSHOT</version>
   <packaging>pom</packaging>
   <name>Guava Maven Parent</name>
   <description>Parent for guava artifacts</description>
@@ -125,21 +125,13 @@
       <plugins>
         <plugin>
           <artifactId>maven-compiler-plugin</artifactId>
-          <version>3.8.1</version>
+          <version>3.12.1</version>
           <configuration>
             <source>1.8</source>
             <target>1.8</target>
             <encoding>UTF-8</encoding>
             <parameters>true</parameters>
-            <compilerArgs>
-              <!--
-                   Make includes/excludes fully work:
-                   https://issues.apache.org/jira/browse/MCOMPILER-174
-
-                   (Compare what guava-gwt has to do for maven-javadoc-plugin.)
-              -->
-              <arg>-sourcepath</arg>
-              <arg>doesnotexist</arg>
+            <compilerArgs combine.children="override">
               <!-- https://errorprone.info/docs/installation#maven -->
               <arg>-XDcompilePolicy=simple</arg>
               <!-- -Xplugin:ErrorProne is set conditionally by a profile. -->