diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 233da4ea..5b6ba546 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,7 +25,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.13.12]
+        scala: [2.13.13]
         java: [temurin@11]
     runs-on: ${{ matrix.os }}
     steps:
@@ -86,7 +86,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.13.12]
+        scala: [2.13.13]
         java: [temurin@11]
     runs-on: ${{ matrix.os }}
     steps:
@@ -103,12 +103,12 @@ jobs:
           java-version: 11
           cache: sbt
 
-      - name: Download target directories (2.13.12)
+      - name: Download target directories (2.13.13)
         uses: actions/download-artifact@v4
         with:
-          name: target-${{ matrix.os }}-2.13.12-${{ matrix.java }}
+          name: target-${{ matrix.os }}-2.13.13-${{ matrix.java }}
 
-      - name: Inflate target directories (2.13.12)
+      - name: Inflate target directories (2.13.13)
         run: |
           tar xf targets.tar
           rm targets.tar
diff --git a/build.sbt b/build.sbt
index 9f11d5a3..be55b7c9 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,7 +1,7 @@
 import com.jsuereth.sbtpgp.PgpKeys.publishSigned
 import com.lightbend.paradox.apidoc.ApidocPlugin.autoImport.apidocRootPackage
 
-val scala213 = "2.13.12"
+val scala213 = "2.13.13"
 
 ThisBuild / scalaVersion         := scala213
 ThisBuild / organization         := "aiven.io"
diff --git a/core-backup/src/test/scala/io/aiven/guardian/kafka/backup/BackupClientInterfaceTest.scala b/core-backup/src/test/scala/io/aiven/guardian/kafka/backup/BackupClientInterfaceTest.scala
index dec98829..0374343c 100644
--- a/core-backup/src/test/scala/io/aiven/guardian/kafka/backup/BackupClientInterfaceTest.scala
+++ b/core-backup/src/test/scala/io/aiven/guardian/kafka/backup/BackupClientInterfaceTest.scala
@@ -86,14 +86,14 @@ trait BackupClientInterfaceTest
       if (allBoundariesWithoutMiddles.length > 1) {
         @nowarn("msg=not.*?exhaustive")
         val withBeforeAndAfter =
-          allBoundariesWithoutMiddles.sliding(2).map { case Seq(before, after) => (before, after) }.toList
+          allBoundariesWithoutMiddles.sliding(2).map { case Seq(first, second) => (first, second) }.toList
 
         val initialTime = kafkaDataWithTimePeriod.data.head.timestamp
 
-        Inspectors.forEvery(withBeforeAndAfter) { case (before, after) =>
+        Inspectors.forEvery(withBeforeAndAfter) { case (first, second) =>
           val periodAsMillis = kafkaDataWithTimePeriod.periodSlice.toMillis
-          ((before.reducedConsumerRecord.timestamp - initialTime) / periodAsMillis) mustNot equal(
-            (after.reducedConsumerRecord.timestamp - initialTime) / periodAsMillis
+          ((first.reducedConsumerRecord.timestamp - initialTime) / periodAsMillis) mustNot equal(
+            (second.reducedConsumerRecord.timestamp - initialTime) / periodAsMillis
           )
         }
       }
@@ -113,14 +113,14 @@ trait BackupClientInterfaceTest
 
       val allCoupledMiddles = result
         .sliding(2)
-        .collect { case Seq(before: mock.Element, after: mock.Element) =>
-          (before, after)
+        .collect { case Seq(first: mock.Element, second: mock.Element) =>
+          (first, second)
         }
         .toList
 
-      Inspectors.forEvery(allCoupledMiddles) { case (before, after) =>
-        ChronoUnit.MICROS.between(before.reducedConsumerRecord.toOffsetDateTime,
-                                  after.reducedConsumerRecord.toOffsetDateTime
+      Inspectors.forEvery(allCoupledMiddles) { case (first, second) =>
+        ChronoUnit.MICROS.between(first.reducedConsumerRecord.toOffsetDateTime,
+                                  second.reducedConsumerRecord.toOffsetDateTime
         ) must be < kafkaDataWithTimePeriod.periodSlice.toMicros
       }
     }