diff --git a/webapp/sources/pom.xml b/webapp/sources/pom.xml
index 487506ff9d6..a984b52fd71 100644
--- a/webapp/sources/pom.xml
+++ b/webapp/sources/pom.xml
@@ -171,7 +171,7 @@ limitations under the License.
             <compilerPlugin>
               <groupId>org.scalameta</groupId>
               <artifactId>semanticdb-scalac_${scala-version}</artifactId>
-              <version>4.8.14</version>
+              <version>4.9.1</version>
             </compilerPlugin>
           </compilerPlugins>
           <args>
@@ -184,7 +184,7 @@ limitations under the License.
               -Xlint:_,-nullary-unit,-missing-interpolator -Yno-adapted-args -Ywarn-dead-code -Ywarn-extra-implicit -Ywarn-inaccessible
               -Ywarn-infer-any -Ywarn-nullary-override -Ywarn-numeric-widen -Ywarn-unused:imports -Ywarn-unused:locals -Ywarn-unused:privates
             -->
-            <arg>-Xsource:3</arg>
+            <arg>-Xsource:3-cross</arg>
             <arg>-deprecation</arg>                  <!-- Emit warning and location for usages of deprecated APIs. -->
             <arg>-explaintypes</arg>                 <!-- Explain type errors in more detail. -->
             <arg>-feature</arg>                      <!-- Emit warning and location for usages of features that should be imported explicitly. -->
@@ -213,9 +213,6 @@ limitations under the License.
 
             <!-- fastparse 3.0.1 emits false unused warning. We must silence them on related files. See: https://github.com/com-lihaoyi/fastparse/issues/285-->
             <arg>-Wconf:cat=unused-nowarn&amp;src=com/normation/utils/Version.scala:s,cat=unused-nowarn&amp;src=com/normation/rudder/services/policies/InterpolatedValueCompiler.scala:s</arg>
-
-            <!-- this warning is no an actual issue, our smart constructor usage is fine with a scala 3 compiler-->
-            <arg>-Wconf:msg=constructor modifiers are assumed by synthetic:s</arg>
           </args>
           <jvmArgs>
             <jvmArg>-Xmx${jvmArg-Xmx}</jvmArg>
@@ -422,7 +419,7 @@ limitations under the License.
     <rudder-major-version>8.1</rudder-major-version>
     <rudder-version>8.1.3-SNAPSHOT</rudder-version>
 
-    <scala-version>2.13.12</scala-version>
+    <scala-version>2.13.14</scala-version>
     <scala-binary-version>2.13</scala-binary-version>
     <!-- lift force us to remain with 1.3.0 because of
          java.lang.NoSuchMethodError: 'scala.collection.mutable.Stack scala.xml.parsing.NoBindingFactoryAdapter.scopeStack()'net.liftweb.util.Html5Parser.$anonfun$parse$1(HtmlParser.scala:373)
diff --git a/webapp/sources/rudder/rudder-rest/src/main/scala/com/normation/rudder/rest/RudderJsonResponse.scala b/webapp/sources/rudder/rudder-rest/src/main/scala/com/normation/rudder/rest/RudderJsonResponse.scala
index 1c13f10d0c6..39f8d419f15 100644
--- a/webapp/sources/rudder/rudder-rest/src/main/scala/com/normation/rudder/rest/RudderJsonResponse.scala
+++ b/webapp/sources/rudder/rudder-rest/src/main/scala/com/normation/rudder/rest/RudderJsonResponse.scala
@@ -43,7 +43,6 @@ import com.normation.rudder.rest.lift.LiftApiProcessingLogger
 import com.normation.zio.*
 import net.liftweb.http.InMemoryResponse
 import net.liftweb.http.LiftResponse
-import scala.annotation.nowarn
 import scala.collection.immutable
 import zio.json.*
 import zio.json.DeriveJsonEncoder
@@ -132,10 +131,9 @@ object RudderJsonResponse {
 
   // rudder response. The "A" parameter is the business object (or list of it) in the response.
   // Success
-  @nowarn("msg=parameter encoder .* is never used") // used by magnolia macro
   def successOne[A](schema: ResponseSchema, obj: A, id: Option[String])(implicit
       prettify: Boolean,
-      encoder: JsonEncoder[A]
+      encoder:  JsonEncoder[A]
   ): LiftJsonResponse[? <: JsonRudderApiResponse[?]] = {
     schema.dataContainer match {
       case Some(key) =>
@@ -146,10 +144,9 @@ object RudderJsonResponse {
         generic.success(JsonRudderApiResponse.success(schema, id, obj))
     }
   }
-  @nowarn("msg=parameter encoder .* is never used") // used by magnolia macro
   def successList[A](schema: ResponseSchema, objs: List[A])(implicit
       prettify: Boolean,
-      encoder: JsonEncoder[A]
+      encoder:  JsonEncoder[A]
   ): LiftJsonResponse[
     ? <: JsonRudderApiResponse[? <: immutable.Iterable[Any] with PartialFunction[Int with String, Any] with Equals]
   ] = {