diff --git a/backend/pom.xml b/backend/pom.xml
index 40b74ec3..5905e3c8 100644
--- a/backend/pom.xml
+++ b/backend/pom.xml
@@ -183,12 +183,12 @@
         <dependency>
             <groupId>com.itextpdf</groupId>
             <artifactId>itextpdf</artifactId>
-            <version>7.1.3</version>
+            <version>5.5.12</version>
         </dependency>
         <dependency>
             <groupId>com.itextpdf</groupId>
             <artifactId>itextpdf</artifactId>
-            <version>5.1.3</version>
+            <version>5.5.12</version>
         </dependency>
         <dependency>
             <groupId>com.itextpdf</groupId>