diff --git a/java/com/google/gerrit/httpd/raw/IndexServlet.java b/java/com/google/gerrit/httpd/raw/IndexServlet.java
index a414e84d8d..55a92fb02e 100644
--- a/java/com/google/gerrit/httpd/raw/IndexServlet.java
+++ b/java/com/google/gerrit/httpd/raw/IndexServlet.java
@@ -22,13 +22,14 @@ import com.google.common.io.Resources;
 import com.google.gerrit.common.Nullable;
 import com.google.template.soy.SoyFileSet;
 import com.google.template.soy.data.SanitizedContent;
-import com.google.template.soy.data.SoyMapData;
 import com.google.template.soy.data.UnsafeSanitizedContentOrdainer;
 import com.google.template.soy.tofu.SoyTofu;
 import java.io.IOException;
 import java.io.OutputStream;
 import java.net.URI;
 import java.net.URISyntaxException;
+import java.util.HashMap;
+import java.util.Map;
 import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
@@ -74,8 +75,8 @@ public class IndexServlet extends HttpServlet {
     return uri.getPath().replaceAll("/$", "");
   }
 
-  static SoyMapData getTemplateData(String canonicalURL, String cdnPath, String faviconPath)
-      throws URISyntaxException {
+  static Map<String, String> getTemplateData(
+      String canonicalURL, String cdnPath, String faviconPath) throws URISyntaxException {
     String canonicalPath = computeCanonicalPath(canonicalURL);
 
     String staticPath = "";
@@ -91,9 +92,10 @@ public class IndexServlet extends HttpServlet {
         UnsafeSanitizedContentOrdainer.ordainAsSafe(
             staticPath, SanitizedContent.ContentKind.TRUSTED_RESOURCE_URI);
 
-    return new SoyMapData(
-        "canonicalPath", canonicalPath,
-        "staticResourcePath", sanitizedStaticPath,
-        "faviconPath", faviconPath);
+    Map<String, String> data = new HashMap<>();
+    data.put("canonicalPath", canonicalPath);
+    data.put("staticResourcePath", sanitizedStaticPath.coerceToString());
+    data.put("faviconPath", faviconPath);
+    return data;
   }
 }
diff --git a/java/com/google/gerrit/server/mail/send/ChangeEmail.java b/java/com/google/gerrit/server/mail/send/ChangeEmail.java
index 4905823397..bb03e52677 100644
--- a/java/com/google/gerrit/server/mail/send/ChangeEmail.java
+++ b/java/com/google/gerrit/server/mail/send/ChangeEmail.java
@@ -44,15 +44,15 @@ import com.google.gerrit.server.permissions.GlobalPermission;
 import com.google.gerrit.server.permissions.PermissionBackendException;
 import com.google.gerrit.server.project.ProjectState;
 import com.google.gerrit.server.query.change.ChangeData;
-import com.google.template.soy.data.SoyListData;
-import com.google.template.soy.data.SoyMapData;
 import java.io.IOException;
 import java.sql.Timestamp;
 import java.text.MessageFormat;
+import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Date;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.TreeSet;
@@ -563,11 +563,11 @@ public abstract class ChangeEmail extends NotificationEmail {
    * a 'type' key which maps to one of 'common', 'add' or 'remove' and a 'text' key which maps to
    * the line's content.
    */
-  private SoyListData getDiffTemplateData() {
-    SoyListData result = new SoyListData();
+  private List<Map<String, String>> getDiffTemplateData() {
+    List<Map<String, String>> result = new ArrayList<>();
     Splitter lineSplitter = Splitter.on(System.getProperty("line.separator"));
     for (String diffLine : lineSplitter.split(getUnifiedDiff())) {
-      SoyMapData lineData = new SoyMapData();
+      Map<String, String> lineData = new HashMap<>();
       lineData.put("text", diffLine);
 
       // Skip empty lines and lines that look like diff headers.
diff --git a/javatests/com/google/gerrit/httpd/raw/IndexServletTest.java b/javatests/com/google/gerrit/httpd/raw/IndexServletTest.java
index b4f8e7a90b..f362e01e91 100644
--- a/javatests/com/google/gerrit/httpd/raw/IndexServletTest.java
+++ b/javatests/com/google/gerrit/httpd/raw/IndexServletTest.java
@@ -18,8 +18,8 @@ import static com.google.common.truth.Truth.assertThat;
 import static java.nio.charset.StandardCharsets.UTF_8;
 
 import com.google.gerrit.testing.GerritBaseTests;
-import com.google.template.soy.data.SoyMapData;
 import java.net.URISyntaxException;
+import java.util.Map;
 import org.junit.Test;
 
 public class IndexServletTest extends GerritBaseTests {
@@ -38,35 +38,34 @@ public class IndexServletTest extends GerritBaseTests {
 
   @Test
   public void noPathAndNoCDN() throws URISyntaxException {
-    SoyMapData data = IndexServlet.getTemplateData("http://example.com/", null, null);
-    assertThat(data.getSingle("canonicalPath").stringValue()).isEqualTo("");
-    assertThat(data.getSingle("staticResourcePath").stringValue()).isEqualTo("");
+    Map<String, String> data = IndexServlet.getTemplateData("http://example.com/", null, null);
+    assertThat(data.get("canonicalPath")).isEqualTo("");
+    assertThat(data.get("staticResourcePath")).isEqualTo("");
   }
 
   @Test
   public void pathAndNoCDN() throws URISyntaxException {
-    SoyMapData data = IndexServlet.getTemplateData("http://example.com/gerrit/", null, null);
-    assertThat(data.getSingle("canonicalPath").stringValue()).isEqualTo("/gerrit");
-    assertThat(data.getSingle("staticResourcePath").stringValue()).isEqualTo("/gerrit");
+    Map<String, String> data =
+        IndexServlet.getTemplateData("http://example.com/gerrit/", null, null);
+    assertThat(data.get("canonicalPath")).isEqualTo("/gerrit");
+    assertThat(data.get("staticResourcePath")).isEqualTo("/gerrit");
   }
 
   @Test
   public void noPathAndCDN() throws URISyntaxException {
-    SoyMapData data =
+    Map<String, String> data =
         IndexServlet.getTemplateData("http://example.com/", "http://my-cdn.com/foo/bar/", null);
-    assertThat(data.getSingle("canonicalPath").stringValue()).isEqualTo("");
-    assertThat(data.getSingle("staticResourcePath").stringValue())
-        .isEqualTo("http://my-cdn.com/foo/bar/");
+    assertThat(data.get("canonicalPath")).isEqualTo("");
+    assertThat(data.get("staticResourcePath")).isEqualTo("http://my-cdn.com/foo/bar/");
   }
 
   @Test
   public void pathAndCDN() throws URISyntaxException {
-    SoyMapData data =
+    Map<String, String> data =
         IndexServlet.getTemplateData(
             "http://example.com/gerrit", "http://my-cdn.com/foo/bar/", null);
-    assertThat(data.getSingle("canonicalPath").stringValue()).isEqualTo("/gerrit");
-    assertThat(data.getSingle("staticResourcePath").stringValue())
-        .isEqualTo("http://my-cdn.com/foo/bar/");
+    assertThat(data.get("canonicalPath")).isEqualTo("/gerrit");
+    assertThat(data.get("staticResourcePath")).isEqualTo("http://my-cdn.com/foo/bar/");
   }
 
   @Test