diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 00000000..d5542c93
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,44 @@
+name: Continuous Integration
+
+on:
+  push:
+    branches: ['master']
+  pull_request:
+    branches: ['*']
+env:
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+jobs:
+  build:
+    name: Build and Test
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        scala: [2.12.12, 2.13.3]
+        java: [adopt@1.8]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout current branch (full)
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Setup Java and Scala
+        uses: olafurpg/setup-scala@v10
+        with:
+          java-version: ${{ matrix.java }}
+
+      - name: Cache sbt
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/.sbt
+            ~/.ivy2/cache
+            ~/.coursier/cache/v1
+            ~/.cache/coursier/v1
+            ~/AppData/Local/Coursier/Cache/v1
+            ~/Library/Caches/Coursier/v1
+          key: ${{ runner.os }}-sbt-cache-v2-${{ hashFiles('**/*.sbt') }}-${{ hashFiles('project/build.properties') }}
+
+      - name: Build project
+        run: sbt ++${{ matrix.scala }} test
diff --git a/.github/workflows/clean.yml b/.github/workflows/clean.yml
new file mode 100644
index 00000000..00208a14
--- /dev/null
+++ b/.github/workflows/clean.yml
@@ -0,0 +1,52 @@
+name: Clean
+
+on: push
+
+jobs:
+  delete-artifacts:
+    name: Delete Artifacts
+    runs-on: ubuntu-latest
+    env:
+      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - name: Delete artifacts
+        run: |
+          # Customize those three lines with your repository and credentials:
+          REPO=${GITHUB_API_URL}/repos/${{ github.repository }}
+
+          # A shortcut to call GitHub API.
+          ghapi() { curl --silent --location --user _:$GITHUB_TOKEN "$@"; }
+
+          # A temporary file which receives HTTP response headers.
+          TMPFILE=/tmp/tmp.$$
+
+          # An associative array, key: artifact name, value: number of artifacts of that name.
+          declare -A ARTCOUNT
+
+          # Process all artifacts on this repository, loop on returned "pages".
+          URL=$REPO/actions/artifacts
+          while [[ -n "$URL" ]]; do
+
+            # Get current page, get response headers in a temporary file.
+            JSON=$(ghapi --dump-header $TMPFILE "$URL")
+
+            # Get URL of next page. Will be empty if we are at the last page.
+            URL=$(grep '^Link:' "$TMPFILE" | tr ',' '\n' | grep 'rel="next"' | head -1 | sed -e 's/.*<//' -e 's/>.*//')
+            rm -f $TMPFILE
+
+            # Number of artifacts on this page:
+            COUNT=$(( $(jq <<<$JSON -r '.artifacts | length') ))
+
+            # Loop on all artifacts on this page.
+            for ((i=0; $i < $COUNT; i++)); do
+
+              # Get name of artifact and count instances of this name.
+              name=$(jq <<<$JSON -r ".artifacts[$i].name?")
+              ARTCOUNT[$name]=$(( $(( ${ARTCOUNT[$name]} )) + 1))
+
+              id=$(jq <<<$JSON -r ".artifacts[$i].id?")
+              size=$(( $(jq <<<$JSON -r ".artifacts[$i].size_in_bytes?") ))
+              printf "Deleting '%s' #%d, %'d bytes\n" $name ${ARTCOUNT[$name]} $size
+              ghapi -X DELETE $REPO/actions/artifacts/$id
+            done
+          done
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 6bfe70d5..00000000
--- a/.travis.yml
+++ /dev/null
@@ -1,31 +0,0 @@
-sudo: false
-language: scala
-scala:
-  - 2.12.12
-  - 2.13.3
-  
-jdk: openjdk8
-
-cache:
-  directories:
-  - "$HOME/.m2/repository"
-  - "$HOME/.sbt"
-  - "$HOME/.ivy2"
-  
-before_cache:
-- find $HOME/.sbt -name "*.lock" | xargs rm
-- find $HOME/.ivy2 -name "ivydata-*.properties" | xargs rm
-- rm -f $HOME/.ivy2/.sbt.ivy.lock
-
-script: sbt ";++2.12.12 publishLocal; ++$TRAVIS_SCALA_VERSION test"
-
-notifications:
-  email:
-    recipients:
-      - "mrzeznicki@iterato.rs"
-  on_success: change
-  on_failure: always
-  on_error: always
-  on_start: never
-  on_cancel: never
-
diff --git a/build.sbt b/build.sbt
index fe66c4ba..f2b31735 100644
--- a/build.sbt
+++ b/build.sbt
@@ -3,12 +3,14 @@ val scala_2_13             = "2.13.3"
 val mainScalaVersion       = scala_2_13
 val supportedScalaVersions = Seq(scala_2_12, scala_2_13)
 
+ThisBuild / crossScalaVersions := supportedScalaVersions
+ThisBuild / scalaVersion := mainScalaVersion
+
 lazy val baseSettings = Seq(
   organization := "pl.iterators",
   organizationName := "Iterators",
   organizationHomepage := Some(url("https://iterato.rs")),
   homepage := Some(url("https://github.com/theiterators/kebs")),
-  scalaVersion := mainScalaVersion,
   scalacOptions := Seq("-deprecation", "-unchecked", "-feature", "-encoding", "utf8"),
   scalafmtVersion := "1.3.0",
   scalafmtOnCompile := true