diff --git a/src/main/java/com/googlesource/gerrit/plugins/replication/AdminApi.java b/src/main/java/com/googlesource/gerrit/plugins/replication/AdminApi.java
index 79362fd..acbf763 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/replication/AdminApi.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/replication/AdminApi.java
@@ -19,7 +19,7 @@
 public interface AdminApi {
   public boolean createProject(Project.NameKey project, String head);
 
-  public void deleteProject(Project.NameKey project);
+  public boolean deleteProject(Project.NameKey project);
 
-  public void updateHead(Project.NameKey project, String newHead);
+  public boolean updateHead(Project.NameKey project, String newHead);
 }
diff --git a/src/main/java/com/googlesource/gerrit/plugins/replication/GerritSshApi.java b/src/main/java/com/googlesource/gerrit/plugins/replication/GerritSshApi.java
index 0e8764a..46c8892 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/replication/GerritSshApi.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/replication/GerritSshApi.java
@@ -54,7 +54,7 @@
   }
 
   @Override
-  public void deleteProject(Project.NameKey projectName) {
+  public boolean deleteProject(Project.NameKey projectName) {
     if (!withoutDeleteProjectPlugin.contains(uri)) {
       OutputStream errStream = sshHelper.newErrorBufferStream();
       String cmd = "deleteproject delete --yes-really-delete --force " + projectName.get();
@@ -63,6 +63,7 @@
         exitCode = execute(uri, cmd, errStream);
       } catch (IOException e) {
         logError("deleting", uri, errStream, cmd, e);
+        return false;
       }
       if (exitCode == 1) {
         logger.atInfo().log(
@@ -71,17 +72,20 @@
         withoutDeleteProjectPlugin.add(uri);
       }
     }
+    return true;
   }
 
   @Override
-  public void updateHead(Project.NameKey projectName, String newHead) {
+  public boolean updateHead(Project.NameKey projectName, String newHead) {
     OutputStream errStream = sshHelper.newErrorBufferStream();
     String cmd = "gerrit set-head " + projectName.get() + " --new-head " + newHead;
     try {
       execute(uri, cmd, errStream);
     } catch (IOException e) {
       logError("updating HEAD of", uri, errStream, cmd, e);
+      return false;
     }
+    return true;
   }
 
   private URIish toSshUri(URIish uri) throws URISyntaxException {
diff --git a/src/main/java/com/googlesource/gerrit/plugins/replication/LocalFS.java b/src/main/java/com/googlesource/gerrit/plugins/replication/LocalFS.java
index 908e7e0..aa6e16c 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/replication/LocalFS.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/replication/LocalFS.java
@@ -52,17 +52,19 @@
   }
 
   @Override
-  public void deleteProject(Project.NameKey project) {
+  public boolean deleteProject(Project.NameKey project) {
     try {
       recursivelyDelete(new File(uri.getPath()));
       repLog.info("Deleted local repository: {}", uri);
     } catch (IOException e) {
       repLog.error("Error deleting local repository {}:\n", uri.getPath(), e);
+      return false;
     }
+    return true;
   }
 
   @Override
-  public void updateHead(Project.NameKey project, String newHead) {
+  public boolean updateHead(Project.NameKey project, String newHead) {
     try (Repository repo = new FileRepository(uri.getPath())) {
       if (newHead != null) {
         RefUpdate u = repo.updateRef(Constants.HEAD);
@@ -70,7 +72,9 @@
       }
     } catch (IOException e) {
       repLog.error("Failed to update HEAD of repository {} to {}", uri.getPath(), newHead, e);
+      return false;
     }
+    return true;
   }
 
   private static void recursivelyDelete(File dir) throws IOException {
diff --git a/src/main/java/com/googlesource/gerrit/plugins/replication/RemoteSsh.java b/src/main/java/com/googlesource/gerrit/plugins/replication/RemoteSsh.java
index 6dfa117..ee9d4c0 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/replication/RemoteSsh.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/replication/RemoteSsh.java
@@ -60,7 +60,7 @@
   }
 
   @Override
-  public void deleteProject(Project.NameKey project) {
+  public boolean deleteProject(Project.NameKey project) {
     String quotedPath = QuotedString.BOURNE.quote(uri.getPath());
     String cmd = "rm -rf " + quotedPath;
     OutputStream errStream = sshHelper.newErrorBufferStream();
@@ -78,11 +78,13 @@
           cmd,
           errStream,
           e);
+      return false;
     }
+    return true;
   }
 
   @Override
-  public void updateHead(Project.NameKey project, String newHead) {
+  public boolean updateHead(Project.NameKey project, String newHead) {
     String quotedPath = QuotedString.BOURNE.quote(uri.getPath());
     String cmd =
         "cd " + quotedPath + " && git symbolic-ref HEAD " + QuotedString.BOURNE.quote(newHead);
@@ -101,6 +103,8 @@
           cmd,
           errStream,
           e);
+      return false;
     }
+    return true;
   }
 }