diff --git a/plugins/statistics.koplugin/main.lua b/plugins/statistics.koplugin/main.lua
index f865878f4..aca136499 100644
--- a/plugins/statistics.koplugin/main.lua
+++ b/plugins/statistics.koplugin/main.lua
@@ -2966,7 +2966,10 @@ function ReaderStatistics.onSync(local_path, cached_path, income_path)
             title, authors, notes, last_open, highlights, pages, series, language, md5, total_read_time, total_read_pages
         ) SELECT
             title, authors, notes, last_open, highlights, pages, series, language, md5, total_read_time, total_read_pages
-        FROM income_db.book WHERE true ON CONFLICT (title, authors, md5) DO NOTHING;
+        FROM income_db.book
+        WHERE (title, authors, md5) NOT IN (
+            SELECT title, authors, md5 FROM book
+        );
 
         -- We create a book_id mapping temp table (view not possible due to attached db)
         CREATE TEMP TABLE book_id_map AS
diff --git a/plugins/vocabbuilder.koplugin/db.lua b/plugins/vocabbuilder.koplugin/db.lua
index 0a7160996..070117329 100644
--- a/plugins/vocabbuilder.koplugin/db.lua
+++ b/plugins/vocabbuilder.koplugin/db.lua
@@ -436,7 +436,7 @@ function VocabularyBuilder.onSync(local_path, cached_path, income_path)
     sql = sql .. [[
         -- We merge the local db with income db to form the synced db.
         -- First we do the books
-        INSERT OR IGNORE INTO title (name) SELECT name FROM income_db.title;
+        INSERT INTO title (name) SELECT name FROM income_db.title WHERE name NOT IN (SELECT name FROM title);
 
         -- Then update income db's book title id references
         UPDATE income_db.vocabulary SET title_id = ifnull(