diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b04fdad..a1b11fe 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,7 +23,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.13.18]
+        scala: [3.9.0]
         java: [temurin@17, temurin@21, temurin@25]
     runs-on: ${{ matrix.os }}
     steps:
@@ -81,7 +81,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.13.18]
+        scala: [3.9.0]
         java: [temurin@17]
     runs-on: ${{ matrix.os }}
     steps:
@@ -117,12 +117,12 @@ jobs:
       - name: Setup sbt
         uses: sbt/setup-sbt@v1
 
-      - name: Download target directories (2.13.18)
+      - name: Download target directories (3.9.0)
         uses: actions/download-artifact@v8
         with:
-          name: target-${{ matrix.os }}-2.13.18-${{ matrix.java }}
+          name: target-${{ matrix.os }}-3.9.0-${{ matrix.java }}
 
-      - name: Inflate target directories (2.13.18)
+      - name: Inflate target directories (3.9.0)
         run: |
           tar xf targets.tar
           rm targets.tar
diff --git a/build.sbt b/build.sbt
index d77299f..9106998 100644
--- a/build.sbt
+++ b/build.sbt
@@ -2,7 +2,7 @@ name := "scex"
 
 inThisBuild(Seq(
   organization := "com.avsystem.scex",
-  scalaVersion := "2.13.18",
+  scalaVersion := "3.9.0",
   githubWorkflowTargetTags ++= Seq("v*"),
   githubWorkflowJavaVersions := Seq(JavaSpec.temurin("17"), JavaSpec.temurin("21"), JavaSpec.temurin("25")),
   githubWorkflowPublishTargetBranches := Seq(RefPredicate.StartsWith(Ref.Tag("v"))),