diff --git a/WordPress/src/main/java/org/wordpress/android/ui/reader/actions/ReaderBlogActions.java b/WordPress/src/main/java/org/wordpress/android/ui/reader/actions/ReaderBlogActions.java
index f8cf767d0971..4a3fe9f4eb32 100644
--- a/WordPress/src/main/java/org/wordpress/android/ui/reader/actions/ReaderBlogActions.java
+++ b/WordPress/src/main/java/org/wordpress/android/ui/reader/actions/ReaderBlogActions.java
@@ -1,5 +1,7 @@
 package org.wordpress.android.ui.reader.actions;
 
+import android.os.Handler;
+import android.os.Looper;
 import android.text.TextUtils;
 import android.util.Pair;
 
@@ -32,8 +34,15 @@
 
 import java.net.HttpURLConnection;
 import java.util.Map;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
 
 public class ReaderBlogActions {
+    // Serial worker for Reader DB writes triggered from Volley response callbacks. Using a single
+    // shared executor avoids spawning a thread per response and lets SQLite writes queue naturally.
+    private static final ExecutorService DB_EXECUTOR = Executors.newSingleThreadExecutor();
+    private static final Handler MAIN_HANDLER = new Handler(Looper.getMainLooper());
+
     public static class BlockedBlogResult {
         public long blogId;
         public long feedId;
@@ -456,12 +465,14 @@ private static void handleUpdateBlogInfoResponse(JSONObject jsonObject, UpdateBl
             return;
         }
 
-        ReaderBlog blogInfo = ReaderBlog.fromJson(jsonObject);
-        ReaderBlogTable.addOrUpdateBlog(blogInfo);
-
-        if (infoListener != null) {
-            infoListener.onResult(blogInfo);
-        }
+        final ReaderBlog blogInfo = ReaderBlog.fromJson(jsonObject);
+        // Move the INSERT OR REPLACE off the main thread; callers expect onResult on main.
+        DB_EXECUTOR.execute(() -> {
+            ReaderBlogTable.addOrUpdateBlog(blogInfo);
+            if (infoListener != null) {
+                MAIN_HANDLER.post(() -> infoListener.onResult(blogInfo));
+            }
+        });
     }
 
     /*
diff --git a/WordPress/src/main/java/org/wordpress/android/ui/reader/repository/ReaderPostRepository.kt b/WordPress/src/main/java/org/wordpress/android/ui/reader/repository/ReaderPostRepository.kt
index 475157150f62..291a6122f541 100644
--- a/WordPress/src/main/java/org/wordpress/android/ui/reader/repository/ReaderPostRepository.kt
+++ b/WordPress/src/main/java/org/wordpress/android/ui/reader/repository/ReaderPostRepository.kt
@@ -116,7 +116,7 @@ class ReaderPostRepository @Inject constructor(
             if (updateAction == ReaderPostServiceStarter.UpdateAction.REQUEST_NEWER ||
                 updateAction == ReaderPostServiceStarter.UpdateAction.REQUEST_REFRESH
             ) {
-                ReaderTagTable.setTagLastUpdated(tag)
+                applicationScope.launch(ioDispatcher) { ReaderTagTable.setTagLastUpdated(tag) }
             }
             handleUpdatePostsResponse(tag, jsonObject, updateAction, resultListener)
         }
@@ -352,7 +352,7 @@ class ReaderPostRepository @Inject constructor(
                     if (updateAction == ReaderPostServiceStarter.UpdateAction.REQUEST_NEWER ||
                         updateAction == ReaderPostServiceStarter.UpdateAction.REQUEST_REFRESH
                     ) {
-                        ReaderTagTable.setTagLastUpdated(tag)
+                        applicationScope.launch(ioDispatcher) { ReaderTagTable.setTagLastUpdated(tag) }
                     }
                     handleUpdatePostsResponse(tag, jsonObject, updateAction, resultListener)
                 }