diff --git a/java/google/registry/flows/TlsCredentials.java b/java/google/registry/flows/TlsCredentials.java
index 95747ffc8..657d1036d 100644
--- a/java/google/registry/flows/TlsCredentials.java
+++ b/java/google/registry/flows/TlsCredentials.java
@@ -76,7 +76,7 @@ public class TlsCredentials implements TransportCredentials {
 
   static InetAddress parseInetAddress(String asciiAddr) {
     try {
-      return InetAddresses.forString(HostAndPort.fromString(asciiAddr).getHost());
+      return InetAddresses.forString(HostAndPort.fromString(asciiAddr).getHostText());
     } catch (IllegalArgumentException e) {
       return null;
     }
diff --git a/java/google/registry/model/SchemaVersion.java b/java/google/registry/model/SchemaVersion.java
index 0d90115a4..d611ffebb 100644
--- a/java/google/registry/model/SchemaVersion.java
+++ b/java/google/registry/model/SchemaVersion.java
@@ -14,8 +14,8 @@
 
 package google.registry.model;
 
+import static com.google.common.base.Predicates.assignableFrom;
 import static com.google.common.base.Predicates.or;
-import static com.google.common.base.Predicates.subtypeOf;
 
 import com.google.common.base.Function;
 import com.google.common.base.Joiner;
@@ -61,7 +61,7 @@ public final class SchemaVersion {
    */
   public static String getSchema() {
     return FluentIterable.from(getAllPersistedTypes())
-        .filter(or(subtypeOf(Enum.class), subtypeOf(ImmutableObject.class)))
+        .filter(or(assignableFrom(Enum.class), assignableFrom(ImmutableObject.class)))
         .transform(new Function<Class<?>, String>() {
             @Override
             public String apply(Class<?> clazz) {
diff --git a/java/google/registry/model/server/Lock.java b/java/google/registry/model/server/Lock.java
index 21a84330a..1f4731d83 100644
--- a/java/google/registry/model/server/Lock.java
+++ b/java/google/registry/model/server/Lock.java
@@ -193,8 +193,7 @@ public class Lock extends ImmutableObject {
           TimeUnit.MILLISECONDS,
           true);
     } catch (Exception e) {
-      Throwables.throwIfUnchecked(e);
-      throw new RuntimeException(e);
+      throw Throwables.propagate(e);
     }
   }
 
diff --git a/java/google/registry/request/Router.java b/java/google/registry/request/Router.java
index d21df9d29..0349c3d7c 100644
--- a/java/google/registry/request/Router.java
+++ b/java/google/registry/request/Router.java
@@ -97,7 +97,7 @@ final class Router {
         } catch (InvocationTargetException e) {
           // This means an exception was thrown during the injection process while instantiating
           // the @Action class; we should propagate that underlying exception.
-          Throwables.throwIfUnchecked(e.getCause());
+          Throwables.propagateIfPossible(e.getCause());
           throw new AssertionError(
               "Component's @Action factory method somehow threw checked exception", e);
         }
diff --git a/java/google/registry/tmch/TmchCertificateAuthority.java b/java/google/registry/tmch/TmchCertificateAuthority.java
index cddb08aca..1c7ea6a41 100644
--- a/java/google/registry/tmch/TmchCertificateAuthority.java
+++ b/java/google/registry/tmch/TmchCertificateAuthority.java
@@ -14,7 +14,7 @@
 
 package google.registry.tmch;
 
-import static com.google.common.base.Throwables.throwIfInstanceOf;
+import static com.google.common.base.Throwables.propagateIfInstanceOf;
 import static google.registry.util.CacheUtils.memoizeWithLongExpiration;
 import static google.registry.util.CacheUtils.memoizeWithShortExpiration;
 import static google.registry.util.ResourceUtils.readResourceUtf8;
@@ -125,7 +125,7 @@ public final class TmchCertificateAuthority {
     try {
       return ROOT_CACHE.get();
     } catch (RuntimeException e) {
-      throwIfInstanceOf(e.getCause(), GeneralSecurityException.class);
+      propagateIfInstanceOf(e.getCause(), GeneralSecurityException.class);
       throw e;
     }
   }
@@ -134,7 +134,7 @@ public final class TmchCertificateAuthority {
     try {
       return CRL_CACHE.get();
     } catch (RuntimeException e) {
-      throwIfInstanceOf(e.getCause(), GeneralSecurityException.class);
+      propagateIfInstanceOf(e.getCause(), GeneralSecurityException.class);
       throw e;
     }
   }
diff --git a/java/google/registry/tmch/TmchXmlSignature.java b/java/google/registry/tmch/TmchXmlSignature.java
index 55112c549..e50218a00 100644
--- a/java/google/registry/tmch/TmchXmlSignature.java
+++ b/java/google/registry/tmch/TmchXmlSignature.java
@@ -17,7 +17,7 @@ package google.registry.tmch;
 import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.base.Preconditions.checkNotNull;
 import static com.google.common.base.Throwables.getRootCause;
-import static com.google.common.base.Throwables.throwIfInstanceOf;
+import static com.google.common.base.Throwables.propagateIfInstanceOf;
 import static google.registry.xml.XmlTransformer.loadXmlSchemas;
 
 import com.google.common.collect.ImmutableList;
@@ -96,7 +96,7 @@ public final class TmchXmlSignature {
       isValid = signature.validate(context);
     } catch (XMLSignatureException e) {
       Throwable cause = getRootCause(e);
-      throwIfInstanceOf(cause, GeneralSecurityException.class);
+      propagateIfInstanceOf(cause, GeneralSecurityException.class);
       throw e;
     }
     if (!isValid) {
diff --git a/java/google/registry/tools/AppEngineConnection.java b/java/google/registry/tools/AppEngineConnection.java
index 01b29df36..6b4adde3c 100644
--- a/java/google/registry/tools/AppEngineConnection.java
+++ b/java/google/registry/tools/AppEngineConnection.java
@@ -163,7 +163,7 @@ class AppEngineConnection implements Connection {
   }
 
   boolean isLocalhost() {
-    return server.getHost().equals("localhost");
+    return server.getHostText().equals("localhost");
   }
 
   private String getUserId() {
diff --git a/java/google/registry/tools/RegistryCli.java b/java/google/registry/tools/RegistryCli.java
index 7cc7c4330..392a503f8 100644
--- a/java/google/registry/tools/RegistryCli.java
+++ b/java/google/registry/tools/RegistryCli.java
@@ -129,7 +129,7 @@ final class RegistryCli {
     // RemoteApiCommands need to have the remote api installed to work.
     RemoteApiInstaller installer = new RemoteApiInstaller();
     RemoteApiOptions options = new RemoteApiOptions();
-    options.server(connection.getServer().getHost(), connection.getServer().getPort());
+    options.server(connection.getServer().getHostText(), connection.getServer().getPort());
     if (connection.isLocalhost()) {
       // Use dev credentials for localhost.
       options.useDevelopmentServerCredential();
diff --git a/java/google/registry/util/X509Utils.java b/java/google/registry/util/X509Utils.java
index 1e4bdda45..2c0cbfeb6 100644
--- a/java/google/registry/util/X509Utils.java
+++ b/java/google/registry/util/X509Utils.java
@@ -16,7 +16,7 @@ package google.registry.util;
 
 import static com.google.common.base.MoreObjects.firstNonNull;
 import static com.google.common.base.Preconditions.checkNotNull;
-import static com.google.common.base.Throwables.throwIfInstanceOf;
+import static com.google.common.base.Throwables.propagateIfInstanceOf;
 import static com.google.common.io.BaseEncoding.base64;
 import static java.nio.charset.StandardCharsets.US_ASCII;
 
@@ -76,7 +76,7 @@ public final class X509Utils {
           .from(CertificateFactory.getInstance("X.509").generateCertificates(input))
           .filter(X509Certificate.class));
     } catch (CertificateException e) {  // CertificateParsingException by specification.
-      throwIfInstanceOf(e, CertificateParsingException.class);
+      propagateIfInstanceOf(e, CertificateParsingException.class);
       throw new CertificateParsingException(e);
     } catch (NoSuchElementException e) {
       throw new CertificateParsingException("No X509Certificate found.");
diff --git a/java/google/registry/xml/XmlFragmentMarshaller.java b/java/google/registry/xml/XmlFragmentMarshaller.java
index feb2d7654..50fec54f3 100644
--- a/java/google/registry/xml/XmlFragmentMarshaller.java
+++ b/java/google/registry/xml/XmlFragmentMarshaller.java
@@ -14,7 +14,7 @@
 
 package google.registry.xml;
 
-import static com.google.common.base.Throwables.throwIfInstanceOf;
+import static com.google.common.base.Throwables.propagateIfInstanceOf;
 import static com.google.common.base.Verify.verify;
 import static java.nio.charset.StandardCharsets.UTF_8;
 
@@ -74,7 +74,7 @@ public final class XmlFragmentMarshaller {
     try {
       marshaller.marshal(element, os);
     } catch (JAXBException e) {
-      throwIfInstanceOf(e, MarshalException.class);
+      propagateIfInstanceOf(e, MarshalException.class);
       throw new RuntimeException("Mysterious XML exception", e);
     }
     String fragment = new String(os.toByteArray(), UTF_8);
diff --git a/javatests/google/registry/server/ServletWrapperDelegatorServlet.java b/javatests/google/registry/server/ServletWrapperDelegatorServlet.java
index 54860e7b0..77c5c9aef 100644
--- a/javatests/google/registry/server/ServletWrapperDelegatorServlet.java
+++ b/javatests/google/registry/server/ServletWrapperDelegatorServlet.java
@@ -62,10 +62,9 @@ public final class ServletWrapperDelegatorServlet extends HttpServlet {
     try {
       Uninterruptibles.getUninterruptibly(task);
     } catch (ExecutionException e) {
-      Throwables.throwIfInstanceOf(e.getCause(), ServletException.class);
-      Throwables.throwIfInstanceOf(e.getCause(), IOException.class);
-      Throwables.throwIfUnchecked(e.getCause());
-      throw new RuntimeException(e.getCause());
+      Throwables.propagateIfInstanceOf(e.getCause(), ServletException.class);
+      Throwables.propagateIfInstanceOf(e.getCause(), IOException.class);
+      throw Throwables.propagate(e.getCause());
     }
   }
 
diff --git a/javatests/google/registry/server/TestServer.java b/javatests/google/registry/server/TestServer.java
index 4966e5ac5..a5e64ea51 100644
--- a/javatests/google/registry/server/TestServer.java
+++ b/javatests/google/registry/server/TestServer.java
@@ -91,8 +91,7 @@ public final class TestServer {
     try {
       server.start();
     } catch (Exception e) {
-      Throwables.throwIfUnchecked(e);
-      throw new RuntimeException(e);
+      throw Throwables.propagate(e);
     }
     UrlChecker.waitUntilAvailable(getUrl("/healthz"), STARTUP_TIMEOUT_MS);
   }
@@ -130,8 +129,7 @@ public final class TestServer {
         }
       }, SHUTDOWN_TIMEOUT_MS, TimeUnit.MILLISECONDS, true);
     } catch (Exception e) {
-      Throwables.throwIfUnchecked(e);
-      throw new RuntimeException(e);
+      throw Throwables.propagate(e);
     }
   }
 
@@ -168,20 +166,20 @@ public final class TestServer {
 
   private static Connector createConnector(HostAndPort address) {
     SocketConnector connector = new SocketConnector();
-    connector.setHost(address.getHost());
+    connector.setHost(address.getHostText());
     connector.setPort(address.getPortOrDefault(DEFAULT_PORT));
     return connector;
   }
 
   /** Converts a bind address into an address that other machines can use to connect here. */
   private static HostAndPort createUrlAddress(HostAndPort address) {
-    if (address.getHost().equals("::") || address.getHost().equals("0.0.0.0")) {
+    if (address.getHostText().equals("::") || address.getHostText().equals("0.0.0.0")) {
       return address.getPortOrDefault(DEFAULT_PORT) == DEFAULT_PORT
           ? HostAndPort.fromHost(getCanonicalHostName())
           : HostAndPort.fromParts(getCanonicalHostName(), address.getPort());
     } else {
       return address.getPortOrDefault(DEFAULT_PORT) == DEFAULT_PORT
-          ? HostAndPort.fromHost(address.getHost())
+          ? HostAndPort.fromHost(address.getHostText())
           : address;
     }
   }
diff --git a/javatests/google/registry/server/UrlChecker.java b/javatests/google/registry/server/UrlChecker.java
index 09786ca74..8efcfed3e 100644
--- a/javatests/google/registry/server/UrlChecker.java
+++ b/javatests/google/registry/server/UrlChecker.java
@@ -45,8 +45,7 @@ final class UrlChecker {
         }
       }, timeoutMs, TimeUnit.MILLISECONDS, true);
     } catch (Exception e) {
-      Throwables.throwIfUnchecked(e);
-      throw new RuntimeException(e);
+      throw Throwables.propagate(e);
     }
   }
 
diff --git a/javatests/google/registry/tools/params/HostAndPortParameterTest.java b/javatests/google/registry/tools/params/HostAndPortParameterTest.java
index 90610bf1f..82de7ae6c 100644
--- a/javatests/google/registry/tools/params/HostAndPortParameterTest.java
+++ b/javatests/google/registry/tools/params/HostAndPortParameterTest.java
@@ -28,25 +28,25 @@ public class HostAndPortParameterTest {
 
   @Test
   public void testConvert_hostOnly() throws Exception {
-    assertThat(instance.convert("foo.bar").getHost()).isEqualTo("foo.bar");
+    assertThat(instance.convert("foo.bar").getHostText()).isEqualTo("foo.bar");
     assertThat(instance.convert("foo.bar").getPortOrDefault(31337)).isEqualTo(31337);
   }
 
   @Test
   public void testConvert_hostAndPort() throws Exception {
-    assertThat(instance.convert("foo.bar:1234").getHost()).isEqualTo("foo.bar");
+    assertThat(instance.convert("foo.bar:1234").getHostText()).isEqualTo("foo.bar");
     assertThat(instance.convert("foo.bar:1234").getPortOrDefault(31337)).isEqualTo(1234);
   }
 
   @Test
   public void testConvert_ipv6_hostOnly() throws Exception {
-    assertThat(instance.convert("[feed:a:bee]").getHost()).isEqualTo("feed:a:bee");
+    assertThat(instance.convert("[feed:a:bee]").getHostText()).isEqualTo("feed:a:bee");
     assertThat(instance.convert("[feed:a:bee]").getPortOrDefault(31337)).isEqualTo(31337);
   }
 
   @Test
   public void testConvert_ipv6_hostAndPort() throws Exception {
-    assertThat(instance.convert("[feed:a:bee]:1234").getHost()).isEqualTo("feed:a:bee");
+    assertThat(instance.convert("[feed:a:bee]:1234").getHostText()).isEqualTo("feed:a:bee");
     assertThat(instance.convert("[feed:a:bee]:1234").getPortOrDefault(31337)).isEqualTo(1234);
   }
 }