diff --git a/backend/pom.xml b/backend/pom.xml
index b35e86b..9d52a11 100644
--- a/backend/pom.xml
+++ b/backend/pom.xml
@@ -15,7 +15,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.3.2</version>
+        <version>2.7.8</version>
     </parent>
 
     <properties>
@@ -26,9 +26,7 @@
         <dependency>
             <groupId>javax.servlet</groupId>
             <artifactId>javax.servlet-api</artifactId>
-            <version>4.0.1</version>
         </dependency>
-        
 
         <dependency>
             <groupId>com.github.ben-manes.caffeine</groupId>
@@ -177,3 +175,4 @@
     </build>
 
 </project>
+
diff --git a/backend/src/main/java/com/nttdata/calender/api/KalenderRestController.java b/backend/src/main/java/com/nttdata/calender/api/KalenderRestController.java
index a85ea35..37bf4d1 100644
--- a/backend/src/main/java/com/nttdata/calender/api/KalenderRestController.java
+++ b/backend/src/main/java/com/nttdata/calender/api/KalenderRestController.java
@@ -3,7 +3,7 @@ package com.nttdata.calender.api;
 import java.util.ArrayList;
 import java.util.List;
 
-import jakarta.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletRequest;
 
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
diff --git a/backend/src/main/java/com/nttdata/calender/api/RequestInterceptor.java b/backend/src/main/java/com/nttdata/calender/api/RequestInterceptor.java
index b17ec85..6dd62e2 100644
--- a/backend/src/main/java/com/nttdata/calender/api/RequestInterceptor.java
+++ b/backend/src/main/java/com/nttdata/calender/api/RequestInterceptor.java
@@ -17,8 +17,8 @@ import com.nttdata.calender.presets.SelectPresetRequest;
 import com.nttdata.calender.presets.UpdatePresetRequest;
 import com.nttdata.calender.states.StateChangeRequest;
 
-import jakarta.servlet.http.HttpServletRequest;
-import jakarta.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
 import com.bmc.arsys.api.Value;
 
 import java.time.LocalDateTime;
diff --git a/backend/src/main/java/com/nttdata/calender/api/rsso/Rsso.java b/backend/src/main/java/com/nttdata/calender/api/rsso/Rsso.java
index c64e809..2c159bd 100644
--- a/backend/src/main/java/com/nttdata/calender/api/rsso/Rsso.java
+++ b/backend/src/main/java/com/nttdata/calender/api/rsso/Rsso.java
@@ -1,6 +1,6 @@
 package com.nttdata.calender.api.rsso;
 
-import jakarta.servlet.http.HttpSession;
+import javax.servlet.http.HttpSession;
 
 import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Service;
diff --git a/backend/src/main/java/com/nttdata/calender/api/rsso/RssoInterceptor.java b/backend/src/main/java/com/nttdata/calender/api/rsso/RssoInterceptor.java
index 4882ab7..8d7f562 100644
--- a/backend/src/main/java/com/nttdata/calender/api/rsso/RssoInterceptor.java
+++ b/backend/src/main/java/com/nttdata/calender/api/rsso/RssoInterceptor.java
@@ -1,8 +1,8 @@
 package com.nttdata.calender.api.rsso;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
-import jakarta.servlet.http.HttpServletRequest;
-import jakarta.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
 
 import org.springframework.stereotype.Component;
 import org.springframework.web.servlet.HandlerInterceptor;
diff --git a/backend/src/main/java/com/nttdata/calender/errorhandling/GlobalExceptionHandler.java b/backend/src/main/java/com/nttdata/calender/errorhandling/GlobalExceptionHandler.java
index 74dd097..fdc9b49 100644
--- a/backend/src/main/java/com/nttdata/calender/errorhandling/GlobalExceptionHandler.java
+++ b/backend/src/main/java/com/nttdata/calender/errorhandling/GlobalExceptionHandler.java
@@ -1,6 +1,6 @@
 package com.nttdata.calender.errorhandling;
 
-import jakarta.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletRequest;
 
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;