diff --git a/citydb-core/build.gradle b/citydb-core/build.gradle
index d070be6..c6a24ee 100644
--- a/citydb-core/build.gradle
+++ b/citydb-core/build.gradle
@@ -1,5 +1,5 @@
 dependencies {
-    api 'com.alibaba.fastjson2:fastjson2:2.0.52'
+    api 'com.alibaba.fastjson2:fastjson2:2.0.49'
     api 'org.apache.tika:tika-core:2.9.2'
     implementation 'org.apache.commons:commons-compress:1.26.2'
     implementation 'com.h2database:h2-mvstore:2.3.230'