diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 00000000..4953fbc8
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,25 @@
+name: test
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+jobs:
+  test:
+    strategy:
+      fail-fast: false
+      matrix:
+        java: [8, 11, 17]
+        scala: [2.13.6, 3.0.2]
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+    - uses: coursier/cache-action@v6
+    - uses: actions/setup-java@v2
+      with:
+        distribution: adopt
+        java-version: ${{matrix.java}}
+    - name: Test
+      run: sbt ++${{matrix.scala}} test core/headerCheck package
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 00000000..dc337111
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,21 @@
+name: Release
+on:
+  push:
+    tags: ["*"]
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-java@v2
+        with:
+          distribution: adopt
+          java-version: 8
+      - run: sbt versionCheck ci-release
+        env:
+          PGP_PASSPHRASE: ${{secrets.PGP_PASSPHRASE}}
+          PGP_SECRET: ${{secrets.PGP_SECRET}}
+          SONATYPE_PASSWORD: ${{secrets.SONATYPE_PASSWORD}}
+          SONATYPE_USERNAME: ${{secrets.SONATYPE_USERNAME}}
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index a27e91a0..00000000
--- a/.travis.yml
+++ /dev/null
@@ -1,19 +0,0 @@
-version: ~> 1.0 # needed for imports
-
-import: scala/scala-dev:travis/default.yml
-
-language: scala
-
-scala:
-  - 3.0.0
-  - 2.13.6
-
-env:
-  - ADOPTOPENJDK=8
-  - ADOPTOPENJDK=11
-  - ADOPTOPENJDK=17
-
-install:
-  - git fetch --tags # get all tags for sbt-dynver
-
-script: ./build.sh
diff --git a/build.sbt b/build.sbt
index 79b3402d..78b10af6 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,3 +1,17 @@
+ThisBuild / crossScalaVersions := Seq("2.13.6", "3.0.2")
+ThisBuild / scalaVersion := (ThisBuild / crossScalaVersions).value.head
+
+// shouldn't be necessary anymore after https://github.com/lampepfl/dotty/pull/13498
+// makes it into a release
+ThisBuild / libraryDependencySchemes += "org.scala-lang" %% "scala3-library" % "semver-spec"
+
+// this was necessary to get us from 3.0.0 to 3.0.2, but we should be able to remove
+// it after the next release
+import com.typesafe.tools.mima.core._
+ThisBuild / mimaBinaryIssueFilters ++= Seq(
+  ProblemFilters.exclude[IncompatibleSignatureProblem]("*"),
+)
+
 Global / cancelable := true
 publish / skip := true // in root
 
diff --git a/build.sh b/build.sh
deleted file mode 100755
index 45d3925e..00000000
--- a/build.sh
+++ /dev/null
@@ -1,51 +0,0 @@
-#!/bin/bash
-
-set -e
-
-# Builds of tagged revisions are published to sonatype staging.
-
-# Travis runs a build on new revisions and on new tags, so a tagged revision is built twice.
-# Builds for a tag have TRAVIS_TAG defined, which we use for identifying tagged builds.
-
-# sbt-dynver sets the version number from the tag
-# sbt-travisci sets the Scala version from the travis job matrix
-
-# To back-publish an existing release for a new Scala / Scala.js / Scala Native version:
-# - check out the tag for the version that needs to be published
-# - change `.travis.yml` to adjust the version numbers and trim down the build matrix as necessary
-# - commit the changes and tag this new revision with an arbitrary suffix after a hash, e.g.,
-#   `v1.2.3#dotty-0.27` (the suffix is ignored, the version will be `1.2.3`)
-
-# We release on JDK 8 (for Scala 2.x and 3.x).
-isReleaseJob() {
-  if [[ "$ADOPTOPENJDK" == "8" ]]; then
-    true
-  else
-    false
-  fi
-}
-
-projectPrefix=""
-
-verPat="[0-9]+\.[0-9]+\.[0-9]+(-[A-Za-z0-9-]+)?"
-tagPat="^v$verPat(#.*)?$"
-
-if [[ "$TRAVIS_TAG" =~ $tagPat ]]; then
-  versionCheckTask="versionCheck"
-  releaseTask="ci-release"
-  if ! isReleaseJob; then
-    echo "Not releasing on Java $ADOPTOPENJDK with Scala $TRAVIS_SCALA_VERSION"
-    exit 0
-  fi
-fi
-
-# default is +publishSigned; we cross-build with travis jobs, not sbt's crossScalaVersions
-export CI_RELEASE="${projectPrefix}publishSigned"
-export CI_SNAPSHOT_RELEASE="${projectPrefix}publish"
-
-# default is sonatypeBundleRelease, which closes and releases the staging repo
-# see https://github.com/xerial/sbt-sonatype#commands
-# for now, until we're confident in the new release scripts, just close the staging repo.
-export CI_SONATYPE_RELEASE="; sonatypePrepare; sonatypeBundleUpload; sonatypeClose"
-
-sbt clean ${projectPrefix}test core/headerCheck ${projectPrefix}publishLocal $versionCheckTask $releaseTask
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 0401cc36..a668f722 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1 +1 @@
-addSbtPlugin("org.scala-lang.modules" % "sbt-scala-module" % "2.4.0")
+addSbtPlugin("org.scala-lang.modules" % "sbt-scala-module" % "3.0.0")