diff --git a/pom.xml b/pom.xml
index 23f28eb..d9a5b89 100644
--- a/pom.xml
+++ b/pom.xml
@@ -173,12 +173,12 @@
         <dependency>
             <groupId>org.aksw.gson</groupId>
             <artifactId>gson-utils-core</artifactId>
-            <version>1.0.0</version>
+            <version>1.0.1</version>
         </dependency>
         <dependency>
             <groupId>org.json</groupId>
             <artifactId>json</artifactId>
-            <version>20080701</version>
+            <version>20230227</version>
         </dependency>
 
         <dependency>
@@ -241,7 +241,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.6.2</version>
+            <version>2.10.1</version>
         </dependency>
 
         <dependency>
diff --git a/src/main/java/eu/dnetlib/repo/manager/service/RepositoryService.java b/src/main/java/eu/dnetlib/repo/manager/service/RepositoryService.java
index 369f21d..cff079b 100644
--- a/src/main/java/eu/dnetlib/repo/manager/service/RepositoryService.java
+++ b/src/main/java/eu/dnetlib/repo/manager/service/RepositoryService.java
@@ -4,7 +4,6 @@ import eu.dnetlib.api.functionality.ValidatorServiceException;
 import eu.dnetlib.repo.manager.domain.*;
 import eu.dnetlib.repo.manager.exception.RepositoryServiceException;
 import eu.dnetlib.repo.manager.exception.ResourceNotFoundException;
-import org.json.JSONException;
 import org.springframework.security.core.Authentication;
 
 import java.util.List;