diff --git a/src/main/java/com/android/tools/r8/ArchiveClassFileProvider.java b/src/main/java/com/android/tools/r8/ArchiveClassFileProvider.java
index e17acd0..37c6fce 100644
--- a/src/main/java/com/android/tools/r8/ArchiveClassFileProvider.java
+++ b/src/main/java/com/android/tools/r8/ArchiveClassFileProvider.java
@@ -17,6 +17,7 @@
 import java.io.Closeable;
 import java.io.IOException;
 import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.NoSuchFileException;
 import java.nio.file.Path;
@@ -59,7 +60,7 @@
     assert isArchive(archive);
     origin = new PathOrigin(archive);
     try {
-      zipFile = new ZipFile(archive.toFile());
+      zipFile = new ZipFile(archive.toFile(), StandardCharsets.UTF_8);
     } catch (IOException e) {
       if (!Files.exists(archive)) {
         throw new NoSuchFileException(archive.toString());
diff --git a/src/main/java/com/android/tools/r8/ArchiveProgramResourceProvider.java b/src/main/java/com/android/tools/r8/ArchiveProgramResourceProvider.java
index b3a4bfb..add715c 100644
--- a/src/main/java/com/android/tools/r8/ArchiveProgramResourceProvider.java
+++ b/src/main/java/com/android/tools/r8/ArchiveProgramResourceProvider.java
@@ -16,6 +16,7 @@
 import com.google.common.io.ByteStreams;
 import java.io.IOException;
 import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.ArrayList;
@@ -58,7 +59,10 @@
 
   public static ArchiveProgramResourceProvider fromArchive(
       Path archive, Predicate<String> include) {
-    return fromSupplier(new PathOrigin(archive), () -> new ZipFile(archive.toFile()), include);
+    return fromSupplier(
+        new PathOrigin(archive),
+        () -> new ZipFile(archive.toFile(), StandardCharsets.UTF_8),
+        include);
   }
 
   public static ArchiveProgramResourceProvider fromSupplier(
diff --git a/src/main/java/com/android/tools/r8/Version.java b/src/main/java/com/android/tools/r8/Version.java
index 5c7bd78..2eeb4e9 100644
--- a/src/main/java/com/android/tools/r8/Version.java
+++ b/src/main/java/com/android/tools/r8/Version.java
@@ -11,7 +11,7 @@
 
   // This field is accessed from release scripts using simple pattern matching.
   // Therefore, changing this field could break our release scripts.
-  public static final String LABEL = "v1.0.31";
+  public static final String LABEL = "v1.0.32";
 
   private Version() {
   }
diff --git a/src/main/java/com/android/tools/r8/compatdexbuilder/CompatDexBuilder.java b/src/main/java/com/android/tools/r8/compatdexbuilder/CompatDexBuilder.java
index 899b187..7d79e35 100644
--- a/src/main/java/com/android/tools/r8/compatdexbuilder/CompatDexBuilder.java
+++ b/src/main/java/com/android/tools/r8/compatdexbuilder/CompatDexBuilder.java
@@ -18,6 +18,7 @@
 import com.google.common.io.ByteStreams;
 import java.io.IOException;
 import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Paths;
 import java.util.ArrayList;
@@ -123,7 +124,7 @@
 
       List<ZipEntry> toDex = new ArrayList<>();
 
-      try (ZipFile zipFile = new ZipFile(input)) {
+      try (ZipFile zipFile = new ZipFile(input, StandardCharsets.UTF_8)) {
         final Enumeration<? extends ZipEntry> entries = zipFile.entries();
         while (entries.hasMoreElements()) {
           ZipEntry entry = entries.nextElement();
diff --git a/src/main/java/com/android/tools/r8/compatdx/CompatDx.java b/src/main/java/com/android/tools/r8/compatdx/CompatDx.java
index c0b00cf..75b767c 100644
--- a/src/main/java/com/android/tools/r8/compatdx/CompatDx.java
+++ b/src/main/java/com/android/tools/r8/compatdx/CompatDx.java
@@ -35,6 +35,7 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.PrintStream;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
@@ -572,7 +573,7 @@
       // For each input archive file, add all class files within.
       for (Path input : inputs) {
         if (isArchive(input)) {
-          try (ZipFile zipFile = new ZipFile(input.toFile())) {
+          try (ZipFile zipFile = new ZipFile(input.toFile(), StandardCharsets.UTF_8)) {
             final Enumeration<? extends ZipEntry> entries = zipFile.entries();
             while (entries.hasMoreElements()) {
               ZipEntry entry = entries.nextElement();
diff --git a/src/main/java/com/android/tools/r8/utils/FilteredArchiveProgramResourceProvider.java b/src/main/java/com/android/tools/r8/utils/FilteredArchiveProgramResourceProvider.java
index 7cde903..fd4bcf8 100644
--- a/src/main/java/com/android/tools/r8/utils/FilteredArchiveProgramResourceProvider.java
+++ b/src/main/java/com/android/tools/r8/utils/FilteredArchiveProgramResourceProvider.java
@@ -19,6 +19,7 @@
 import com.google.common.io.ByteStreams;
 import java.io.IOException;
 import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.ArrayList;
@@ -46,7 +47,7 @@
     assert isArchive(archive.getPath());
     List<ProgramResource> dexResources = new ArrayList<>();
     List<ProgramResource> classResources = new ArrayList<>();
-    try (ZipFile zipFile = new ZipFile(archive.getPath().toFile())) {
+    try (ZipFile zipFile = new ZipFile(archive.getPath().toFile(), StandardCharsets.UTF_8)) {
       final Enumeration<? extends ZipEntry> entries = zipFile.entries();
       while (entries.hasMoreElements()) {
         ZipEntry entry = entries.nextElement();
diff --git a/src/main/java/com/android/tools/r8/utils/ZipUtils.java b/src/main/java/com/android/tools/r8/utils/ZipUtils.java
index 8f46f3e..2086fad 100644
--- a/src/main/java/com/android/tools/r8/utils/ZipUtils.java
+++ b/src/main/java/com/android/tools/r8/utils/ZipUtils.java
@@ -10,6 +10,7 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.Enumeration;
@@ -27,7 +28,7 @@
   }
 
   public static void iter(String zipFileStr, OnEntryHandler handler) throws IOException {
-    try (ZipFile zipFile = new ZipFile(zipFileStr)) {
+    try (ZipFile zipFile = new ZipFile(zipFileStr, StandardCharsets.UTF_8)) {
       final Enumeration<? extends ZipEntry> entries = zipFile.entries();
       while (entries.hasMoreElements()) {
         ZipEntry entry = entries.nextElement();
diff --git a/src/test/apiUsageSample/com/android/tools/apiusagesample/D8ApiUsageSample.java b/src/test/apiUsageSample/com/android/tools/apiusagesample/D8ApiUsageSample.java
index ad31005..2ef0123 100644
--- a/src/test/apiUsageSample/com/android/tools/apiusagesample/D8ApiUsageSample.java
+++ b/src/test/apiUsageSample/com/android/tools/apiusagesample/D8ApiUsageSample.java
@@ -22,6 +22,7 @@
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
@@ -387,7 +388,7 @@
     for (Path file : files) {
       if (isArchive(file)) {
         Origin zipOrigin = new PathOrigin(file);
-        ZipInputStream zip = new ZipInputStream(Files.newInputStream(file));
+        ZipInputStream zip = new ZipInputStream(Files.newInputStream(file), StandardCharsets.UTF_8);
         ZipEntry entry;
         while (null != (entry = zip.getNextEntry())) {
           if (isClassFile(Paths.get(entry.getName()))) {
diff --git a/src/test/apiUsageSample/com/android/tools/apiusagesample/R8ApiUsageSample.java b/src/test/apiUsageSample/com/android/tools/apiusagesample/R8ApiUsageSample.java
index 7230f55..2c2e8d7 100644
--- a/src/test/apiUsageSample/com/android/tools/apiusagesample/R8ApiUsageSample.java
+++ b/src/test/apiUsageSample/com/android/tools/apiusagesample/R8ApiUsageSample.java
@@ -22,6 +22,7 @@
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
@@ -378,7 +379,7 @@
     for (Path file : files) {
       if (isArchive(file)) {
         Origin zipOrigin = new PathOrigin(file);
-        ZipInputStream zip = new ZipInputStream(Files.newInputStream(file));
+        ZipInputStream zip = new ZipInputStream(Files.newInputStream(file), StandardCharsets.UTF_8);
         ZipEntry entry;
         while (null != (entry = zip.getNextEntry())) {
           if (isClassFile(Paths.get(entry.getName()))) {
diff --git a/src/test/java/com/android/tools/r8/D8CommandTest.java b/src/test/java/com/android/tools/r8/D8CommandTest.java
index 76856a8..7562224 100644
--- a/src/test/java/com/android/tools/r8/D8CommandTest.java
+++ b/src/test/java/com/android/tools/r8/D8CommandTest.java
@@ -17,6 +17,7 @@
 import com.android.tools.r8.utils.AndroidApp;
 import com.android.tools.r8.utils.ZipUtils;
 import com.google.common.collect.ImmutableList;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
@@ -279,7 +280,7 @@
     Path input = Paths.get(EXAMPLES_BUILD_DIR, "arithmetic.jar");
     ProgramResourceProvider myProvider =
         ArchiveProgramResourceProvider.fromSupplier(
-            new MyOrigin(), () -> new ZipFile(input.toFile()));
+            new MyOrigin(), () -> new ZipFile(input.toFile(), StandardCharsets.UTF_8));
     D8Command command =
         D8Command.builder()
             .setProgramConsumer(DexIndexedConsumer.emptyConsumer())
diff --git a/src/test/java/com/android/tools/r8/RunExamplesAndroidOTest.java b/src/test/java/com/android/tools/r8/RunExamplesAndroidOTest.java
index 7d55807..5b3599a 100644
--- a/src/test/java/com/android/tools/r8/RunExamplesAndroidOTest.java
+++ b/src/test/java/com/android/tools/r8/RunExamplesAndroidOTest.java
@@ -26,6 +26,7 @@
 import com.google.common.io.ByteStreams;
 import java.io.IOException;
 import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.ArrayList;
@@ -573,7 +574,7 @@
 
   protected DexInspector getMainDexInspector(Path zip)
       throws ZipException, IOException, ExecutionException {
-    try (ZipFile zipFile = new ZipFile(zip.toFile())) {
+    try (ZipFile zipFile = new ZipFile(zip.toFile(), StandardCharsets.UTF_8)) {
       try (InputStream in =
           zipFile.getInputStream(zipFile.getEntry(ToolHelper.DEFAULT_DEX_FILENAME))) {
         return new DexInspector(
diff --git a/src/test/java/com/android/tools/r8/RunExamplesAndroidPTest.java b/src/test/java/com/android/tools/r8/RunExamplesAndroidPTest.java
index bc898bd..ccb0c3a 100644
--- a/src/test/java/com/android/tools/r8/RunExamplesAndroidPTest.java
+++ b/src/test/java/com/android/tools/r8/RunExamplesAndroidPTest.java
@@ -24,6 +24,7 @@
 import com.google.common.io.ByteStreams;
 import java.io.IOException;
 import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.ArrayList;
@@ -252,7 +253,7 @@
 
   protected DexInspector getMainDexInspector(Path zip)
       throws ZipException, IOException, ExecutionException {
-    try (ZipFile zipFile = new ZipFile(zip.toFile())) {
+    try (ZipFile zipFile = new ZipFile(zip.toFile(), StandardCharsets.UTF_8)) {
       try (InputStream in =
           zipFile.getInputStream(zipFile.getEntry(ToolHelper.DEFAULT_DEX_FILENAME))) {
         return new DexInspector(
diff --git a/src/test/java/com/android/tools/r8/RunExamplesJava9Test.java b/src/test/java/com/android/tools/r8/RunExamplesJava9Test.java
index 281b0da..2e39856 100644
--- a/src/test/java/com/android/tools/r8/RunExamplesJava9Test.java
+++ b/src/test/java/com/android/tools/r8/RunExamplesJava9Test.java
@@ -24,6 +24,7 @@
 import com.google.common.io.ByteStreams;
 import java.io.IOException;
 import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.ArrayList;
@@ -305,7 +306,7 @@
 
   protected DexInspector getMainDexInspector(Path zip)
       throws ZipException, IOException, ExecutionException {
-    try (ZipFile zipFile = new ZipFile(zip.toFile())) {
+    try (ZipFile zipFile = new ZipFile(zip.toFile(), StandardCharsets.UTF_8)) {
       try (InputStream in =
           zipFile.getInputStream(zipFile.getEntry(ToolHelper.DEFAULT_DEX_FILENAME))) {
         return new DexInspector(
diff --git a/src/test/java/com/android/tools/r8/TestBase.java b/src/test/java/com/android/tools/r8/TestBase.java
index 00b592f..743ddcb 100644
--- a/src/test/java/com/android/tools/r8/TestBase.java
+++ b/src/test/java/com/android/tools/r8/TestBase.java
@@ -28,6 +28,7 @@
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.Arrays;
@@ -141,7 +142,7 @@
    */
   protected Set<String> readClassesInJar(Path jar) throws IOException {
     Set<String> result = new HashSet<>();
-    try (ZipFile zipFile = new ZipFile(jar.toFile())) {
+    try (ZipFile zipFile = new ZipFile(jar.toFile(), StandardCharsets.UTF_8)) {
       final Enumeration<? extends ZipEntry> entries = zipFile.entries();
       while (entries.hasMoreElements()) {
         ZipEntry entry = entries.nextElement();
diff --git a/src/test/java/com/android/tools/r8/compatdexbuilder/CompatDexBuilderTests.java b/src/test/java/com/android/tools/r8/compatdexbuilder/CompatDexBuilderTests.java
index e49c740..341fb67 100644
--- a/src/test/java/com/android/tools/r8/compatdexbuilder/CompatDexBuilderTests.java
+++ b/src/test/java/com/android/tools/r8/compatdexbuilder/CompatDexBuilderTests.java
@@ -15,6 +15,7 @@
 import com.android.tools.r8.ToolHelper.ArtCommandBuilder;
 import com.google.common.collect.ImmutableList;
 import java.io.IOException;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Path;
 import java.util.Enumeration;
 import java.util.HashSet;
@@ -65,7 +66,7 @@
     for (String className : CLASS_NAMES) {
       expectedNames.add(SUBDIR + "/" + className + ".class.dex");
     }
-    try (ZipFile zipFile = new ZipFile(outputZip.toFile())) {
+    try (ZipFile zipFile = new ZipFile(outputZip.toFile(), StandardCharsets.UTF_8)) {
       for (Enumeration<? extends ZipEntry> e = zipFile.entries(); e.hasMoreElements(); ) {
         ZipEntry ze = e.nextElement();
         expectedNames.remove(ze.getName());
diff --git a/src/test/java/com/android/tools/r8/compatdx/CompatDxTests.java b/src/test/java/com/android/tools/r8/compatdx/CompatDxTests.java
index c55428f..7d181bc 100644
--- a/src/test/java/com/android/tools/r8/compatdx/CompatDxTests.java
+++ b/src/test/java/com/android/tools/r8/compatdx/CompatDxTests.java
@@ -17,6 +17,7 @@
 import com.google.common.collect.ImmutableMap;
 import java.io.IOException;
 import java.net.URI;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.FileSystem;
 import java.nio.file.FileSystems;
 import java.nio.file.Files;
@@ -197,8 +198,8 @@
   }
 
   private void compareArchiveFiles(Path d8File, Path dxFile) throws IOException {
-    ZipFile d8Zip = new ZipFile(d8File.toFile());
-    ZipFile dxZip = new ZipFile(dxFile.toFile());
+    ZipFile d8Zip = new ZipFile(d8File.toFile(), StandardCharsets.UTF_8);
+    ZipFile dxZip = new ZipFile(dxFile.toFile(), StandardCharsets.UTF_8);
     // TODO(zerny): This should test resource containment too once supported.
     Set<String> d8Content = d8Zip.stream().map(ZipEntry::getName).collect(Collectors.toSet());
     Set<String> dxContent = dxZip.stream().map(ZipEntry::getName).collect(Collectors.toSet());