diff --git a/ch-covidcertificate-backend-transformation/ch-covidcertificate-backend-transformation-model/pom.xml b/ch-covidcertificate-backend-transformation/ch-covidcertificate-backend-transformation-model/pom.xml
index 5a2cbc5..066045d 100644
--- a/ch-covidcertificate-backend-transformation/ch-covidcertificate-backend-transformation-model/pom.xml
+++ b/ch-covidcertificate-backend-transformation/ch-covidcertificate-backend-transformation-model/pom.xml
@@ -22,12 +22,8 @@
         <!--    Core SDK    -->
         <dependency>
             <groupId>ch.admin.bag.covidcertificate</groupId>
-            <artifactId>CovidCertificate-SDK-Kotlin</artifactId>
-            <version>1.1.0</version>
-        </dependency>
-        <dependency>
-            <groupId>org.jetbrains.kotlin</groupId>
-            <artifactId>kotlin-stdlib</artifactId>
+            <artifactId>sdk-core</artifactId>
+            <version>1.1.3</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.module</groupId>
diff --git a/ch-covidcertificate-backend-transformation/ch-covidcertificate-backend-transformation-ws/pom.xml b/ch-covidcertificate-backend-transformation/ch-covidcertificate-backend-transformation-ws/pom.xml
index ff3628b..a81a4ad 100644
--- a/ch-covidcertificate-backend-transformation/ch-covidcertificate-backend-transformation-ws/pom.xml
+++ b/ch-covidcertificate-backend-transformation/ch-covidcertificate-backend-transformation-ws/pom.xml
@@ -93,17 +93,6 @@
             <artifactId>jackson-databind</artifactId>
         </dependency>
 
-        <!--    Core SDK    -->
-        <dependency>
-            <groupId>ch.admin.bag.covidcertificate</groupId>
-            <artifactId>sdk-core</artifactId>
-            <version>1.1.3</version>
-        </dependency>
-        <dependency>
-            <groupId>com.fasterxml.jackson.module</groupId>
-            <artifactId>jackson-module-kotlin</artifactId>
-        </dependency>
-
         <!--    Testcontainers    -->
         <dependency>
             <groupId>org.testcontainers</groupId>