diff --git a/build.sbt b/build.sbt
index 894e36feac..438c24a522 100644
--- a/build.sbt
+++ b/build.sbt
@@ -18,7 +18,7 @@
 
 organization := "io.renku"
 name := "renku-graph"
-ThisBuild / scalaVersion := "2.13.14"
+ThisBuild / scalaVersion := "2.13.15"
 
 // This project contains nothing to package, like pure POM maven project
 packagedArtifacts := Map.empty
diff --git a/event-log/src/main/scala/io/renku/eventlog/init/TimestampZoneAdder.scala b/event-log/src/main/scala/io/renku/eventlog/init/TimestampZoneAdder.scala
index 0fb8b02125..218408396c 100644
--- a/event-log/src/main/scala/io/renku/eventlog/init/TimestampZoneAdder.scala
+++ b/event-log/src/main/scala/io/renku/eventlog/init/TimestampZoneAdder.scala
@@ -19,7 +19,6 @@
 package io.renku.eventlog.init
 
 import cats.data.Kleisli
-import cats.data.Kleisli._
 import cats.effect.MonadCancelThrow
 import cats.syntax.all._
 import io.renku.eventlog.EventLogDB.SessionResource
@@ -56,13 +55,13 @@ private class TimestampZoneAdderImpl[F[_]: MonadCancelThrow: Logger: SessionReso
   private def migrateIfNeeded(table: String, column: String): Kleisli[F, Session[F], Unit] = {
     findCurrentType(table, column) >>= {
       case "timestamp with time zone" =>
-        liftF(Logger[F].info(s"$table.$column already migrated to 'timestamp with time zone'"))
+        Kleisli.liftF(Logger[F].info(s"$table.$column already migrated to 'timestamp with time zone'"))
       case columnType =>
-        liftF[F, Session[F], Unit](Logger[F].info(s"$table.$column in '$columnType', migrating")) >>=
+        Kleisli.liftF[F, Session[F], Unit](Logger[F].info(s"$table.$column in '$columnType', migrating")) >>=
           (_ => migrate(table, column))
     }
   } recoverWith { case NonFatal(e) =>
-    liftF(Logger[F].error(e)(s"$table.$column migration failed")) >> liftF(e.raiseError[F, Unit])
+    Kleisli.liftF(Logger[F].error(e)(s"$table.$column migration failed") >> e.raiseError[F, Unit])
   }
 
   private def findCurrentType(table: String, column: String): Kleisli[F, Session[F], String] = {