diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index abe7a35..3217e41 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -50,6 +50,8 @@ jobs:
       - name: Check that workflows are up to date
         run: sbt '++ ${{ matrix.scala }}' githubWorkflowCheck
 
+      - run: sbt '++ ${{ matrix.scala }}' scalafmtCheck
+
       - env:
           HONEYCOMB_WRITE_KEY: ${{ secrets.HONEYCOMB_WRITE_KEY }}
         run: sbt '++ ${{ matrix.scala }}' test
diff --git a/.scalafmt.conf b/.scalafmt.conf
new file mode 100644
index 0000000..73f9e8e
--- /dev/null
+++ b/.scalafmt.conf
@@ -0,0 +1,3 @@
+version = 3.8.2
+runner.dialect = scala213source3
+maxColumn = 120
diff --git a/build.sbt b/build.sbt
index 798e53c..32aa488 100644
--- a/build.sbt
+++ b/build.sbt
@@ -11,6 +11,9 @@ ThisBuild / githubWorkflowScalaVersions  := Seq("2.13.15", "2.12.20", "3.3.4")
 ThisBuild / githubWorkflowJavaVersions  := Seq(JavaSpec.temurin("21"))
 
 ThisBuild / githubWorkflowBuild := Seq(
+  WorkflowStep.Sbt(
+    commands = List("scalafmtCheck")
+  ),
   WorkflowStep.Sbt(
     // scoverage plugin not yet supporting scala 2.13.15
     // commands = List("coverage", "test"),
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 68c6df6..7908d1e 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -5,3 +5,4 @@ addSbtPlugin("org.typelevel" % "sbt-tpolecat" % "0.5.2")
 addSbtPlugin("com.github.sbt" % "sbt-release" % "1.4.0")
 addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "3.12.2")
 addSbtPlugin("com.github.sbt" % "sbt-pgp" % "2.3.0")
+addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.2")
diff --git a/src/main/scala/weaver/pure/Suite.scala b/src/main/scala/weaver/pure/Suite.scala
index 6525f95..551a617 100644
--- a/src/main/scala/weaver/pure/Suite.scala
+++ b/src/main/scala/weaver/pure/Suite.scala
@@ -16,4 +16,4 @@ trait Suite extends EffectSuite[IO] with BaseCatsSuite with Expectations.Helpers
   override implicit protected def effectCompat: EffectCompat[IO] = CatsUnsafeRun
 
   override def getSuite: EffectSuite[IO] = this
-}
\ No newline at end of file
+}
diff --git a/src/main/scala/weaver/pure/package.scala b/src/main/scala/weaver/pure/package.scala
index 3101cf7..2daa31f 100644
--- a/src/main/scala/weaver/pure/package.scala
+++ b/src/main/scala/weaver/pure/package.scala
@@ -5,17 +5,23 @@ import cats.effect.IO
 import fs2.Stream
 
 package object pure extends Expectations.Helpers {
-  
+
   import util._
 
-  def test(name: String)(run: IO[Expectations])(implicit loc: SourceLocation): IO[Test] = {
+  def test(
+      name: String
+  )(run: IO[Expectations])(implicit loc: SourceLocation): IO[Test] = {
     failureToExpectations(run)
       .map(x => Test(name, x))
   }
 
-  def pureTest(name: String)(run: => Expectations)(implicit loc: SourceLocation): Test = Test(name, run)
+  def pureTest(name: String)(run: => Expectations)(implicit
+      loc: SourceLocation
+  ): Test = Test(name, run)
 
-  def parSuite(tests: List[IO[Test]]): Stream[IO, Test] = Stream.evals(tests.parTraverse(identity))
+  def parSuite(tests: List[IO[Test]]): Stream[IO, Test] =
+    Stream.evals(tests.parTraverse(identity))
 
-  def seqSuite(tests: List[IO[Test]]): Stream[IO, Test] = Stream.evals(tests.sequence)
+  def seqSuite(tests: List[IO[Test]]): Stream[IO, Test] =
+    Stream.evals(tests.sequence)
 }
diff --git a/src/main/scala/weaver/pure/traced/package.scala b/src/main/scala/weaver/pure/traced/package.scala
index 13facde..c987f21 100644
--- a/src/main/scala/weaver/pure/traced/package.scala
+++ b/src/main/scala/weaver/pure/traced/package.scala
@@ -12,10 +12,13 @@ package object traced {
 
   type TracedTest = ReaderT[IO, Span[IO], Test]
 
-  def tracedTest(name: String)(run: Span[IO] => IO[Expectations])(implicit loc: SourceLocation): TracedTest =
+  def tracedTest(name: String)(
+      run: Span[IO] => IO[Expectations]
+  )(implicit loc: SourceLocation): TracedTest =
     ReaderT { parent =>
-      parent.span(name).use{ span =>
-        weaver.pure.test(name)(run(span))
+      parent.span(name).use { span =>
+        weaver.pure
+          .test(name)(run(span))
           .flatTap { test =>
             traceExpectationFailures(span, test)
           }
@@ -28,18 +31,24 @@ package object traced {
       _ => IO.unit
     )
 
-  def tracedParSuite(name: String)(suite: List[TracedTest])(implicit rootSpan: Span[IO]): Stream[IO,Test] =
+  def tracedParSuite(name: String)(suite: List[TracedTest])(implicit
+      rootSpan: Span[IO]
+  ): Stream[IO, Test] =
     tracedSuite(weaver.pure.parSuite)(name)(suite)(rootSpan)
-  
-  def tracedSeqSuite(name: String)(suite: List[TracedTest])(implicit rootSpan: Span[IO]): Stream[IO,Test] =
+
+  def tracedSeqSuite(name: String)(suite: List[TracedTest])(implicit
+      rootSpan: Span[IO]
+  ): Stream[IO, Test] =
     tracedSuite(weaver.pure.seqSuite)(name)(suite)(rootSpan)
-    
-  def tracedSuite(toStream: List[IO[Test]] => Stream[IO, Test])(name: String)(suite: List[TracedTest]): Span[IO] => Stream[IO,Test] =
-    parent => 
+
+  def tracedSuite(
+      toStream: List[IO[Test]] => Stream[IO, Test]
+  )(name: String)(suite: List[TracedTest]): Span[IO] => Stream[IO, Test] =
+    parent =>
       Stream.resource(parent.span(name)).flatMap { suiteSpan =>
         val testsWithSpan = suite.map(_.run(suiteSpan))
         toStream(testsWithSpan)
 
       }
-   
+
 }
diff --git a/src/main/scala/weaver/pure/util.scala b/src/main/scala/weaver/pure/util.scala
index 3c6f395..80a109e 100644
--- a/src/main/scala/weaver/pure/util.scala
+++ b/src/main/scala/weaver/pure/util.scala
@@ -4,8 +4,10 @@ import weaver.{Test => WeaverTest, Expectations, SourceLocation, TestOutcome}
 
 import cats.effect.IO
 
-private [pure] object util {
-  def failureToExpectations(x: IO[Expectations])(implicit loc: SourceLocation): IO[Expectations] = {
+private[pure] object util {
+  def failureToExpectations(
+      x: IO[Expectations]
+  )(implicit loc: SourceLocation): IO[Expectations] = {
     x.handleErrorWith { t =>
       IO.delay(t.printStackTrace()).map { _ =>
         failure(t.toString())
@@ -13,8 +15,9 @@ private [pure] object util {
     }
   }
 
-  def toTestOutcome(test: Test): TestOutcome = WeaverTest.pure(test.name.name)(() => test.run)
+  def toTestOutcome(test: Test): TestOutcome =
+    WeaverTest.pure(test.name.name)(() => test.run)
 
   def outcomeToString(x: TestOutcome): String = x.formatted(TestOutcome.Verbose)
-    
+
 }
diff --git a/src/test/scala/com/dimitarg/example/ExampleResSuite.scala b/src/test/scala/com/dimitarg/example/ExampleResSuite.scala
index d65bf26..83771a9 100644
--- a/src/test/scala/com/dimitarg/example/ExampleResSuite.scala
+++ b/src/test/scala/com/dimitarg/example/ExampleResSuite.scala
@@ -10,40 +10,39 @@ import weaver.pure._
 
 object ExampleResSuite extends Suite {
 
-  // shared resource  
+  // shared resource
   final case class TextFile(lines: List[String])
 
   // describe how to acquire shared resource
   val sharedResource: Resource[IO, TextFile] = for {
     _ <- Resource.make(
-        IO(ExecutionContext.fromExecutorService(Executors.newCachedThreadPool()))
-    )( x =>
-        IO(x.shutdown)
-    )
+      IO(ExecutionContext.fromExecutorService(Executors.newCachedThreadPool()))
+    )(x => IO(x.shutdown))
     xs = fs2.io.readInputStream(
-        IO(getClass().getResourceAsStream("/foo.txt")),
-        1024, closeAfterUse = true
-    ) 
+      IO(getClass().getResourceAsStream("/foo.txt")),
+      1024,
+      closeAfterUse = true
+    )
     lines <- Resource.eval(
-        xs.through(fs2.text.utf8.decode).through(fs2.text.lines).compile.toList
+      xs.through(fs2.text.utf8.decode).through(fs2.text.lines).compile.toList
     )
   } yield TextFile(lines)
 
-
   // suite which uses shared resource
-  val suites: TextFile => Stream[IO, Test] = textFile => Stream(
-    pureTest("the file has one line") {
-      expect(textFile.lines.size == 1)
-    },
-    pureTest("the file has the expected content") {
-      expect(textFile.lines == List("Hello, there!"))    
-    }
-  )
+  val suites: TextFile => Stream[IO, Test] = textFile =>
+    Stream(
+      pureTest("the file has one line") {
+        expect(textFile.lines.size == 1)
+      },
+      pureTest("the file has the expected content") {
+        expect(textFile.lines == List("Hello, there!"))
+      }
+    )
 
   // construct `suitesStream` by acquiring resource and passing that to your `suite` via `flatMap`
   override def suitesStream: Stream[IO, Test] =
     Stream.resource(sharedResource).flatMap { res =>
       suites(res)
     }
-  
+
 }
diff --git a/src/test/scala/com/dimitarg/example/ExampleSharedResSuite.scala b/src/test/scala/com/dimitarg/example/ExampleSharedResSuite.scala
index 7e9dc49..403830c 100644
--- a/src/test/scala/com/dimitarg/example/ExampleSharedResSuite.scala
+++ b/src/test/scala/com/dimitarg/example/ExampleSharedResSuite.scala
@@ -10,39 +10,43 @@ final case class SharedResource(foo: FooResource, bar: BarResource)
 
 object FooSuite {
 
-  val all: FooResource => Stream[IO, Test] = foo => Stream(
-    pureTest("the foo foos") {
+  val all: FooResource => Stream[IO, Test] = foo =>
+    Stream(
+      pureTest("the foo foos") {
         expect(foo == FooResource())
-    }
-  )
+      }
+    )
 }
 
 object BarSuite {
-  val all: BarResource => Stream[IO, Test] = bar => Stream(
-    pureTest("a barsuite test") {
-      expect(bar.value == 42)
-    }
-  )
+  val all: BarResource => Stream[IO, Test] = bar =>
+    Stream(
+      pureTest("a barsuite test") {
+        expect(bar.value == 42)
+      }
+    )
 }
 
 object ExampleSharedResSuite extends Suite {
 
   val mkSharedResource: Resource[IO, SharedResource] = for {
     _ <- Resource.eval(IO.pure(println("acquiring shared resource")))
-    res <- Resource.eval(IO.pure(
-      SharedResource(FooResource(), BarResource(42))
-    ))
+    res <- Resource.eval(
+      IO.pure(
+        SharedResource(FooResource(), BarResource(42))
+      )
+    )
   } yield res
 
-  val suiteUsingAllResources: SharedResource => Stream[IO, Test] = res => Stream(
-    pureTest("some test"){
+  val suiteUsingAllResources: SharedResource => Stream[IO, Test] = res =>
+    Stream(pureTest("some test") {
       expect(res.bar.value == 42)
-  })
+    })
 
   override def suitesStream: Stream[IO, Test] =
     Stream.resource(mkSharedResource).flatMap { r =>
       suiteUsingAllResources(r) ++
-      FooSuite.all(r.foo) ++
-      BarSuite.all(r.bar)
+        FooSuite.all(r.foo) ++
+        BarSuite.all(r.bar)
     }
 }
diff --git a/src/test/scala/com/dimitarg/example/ExampleSuite.scala b/src/test/scala/com/dimitarg/example/ExampleSuite.scala
index b136a48..8fc125b 100644
--- a/src/test/scala/com/dimitarg/example/ExampleSuite.scala
+++ b/src/test/scala/com/dimitarg/example/ExampleSuite.scala
@@ -10,7 +10,7 @@ object ExampleSuite extends Suite {
 
   override def suitesStream: Stream[IO, Test] = Stream(
     pureTest("a pure test") {
-      val x = 1  
+      val x = 1
       expect(x == 1)
     },
     pureTest("another pure test") {
diff --git a/src/test/scala/com/dimitarg/example/traced/ExampleTracedSuite.scala b/src/test/scala/com/dimitarg/example/traced/ExampleTracedSuite.scala
index dc8b90a..7911268 100644
--- a/src/test/scala/com/dimitarg/example/traced/ExampleTracedSuite.scala
+++ b/src/test/scala/com/dimitarg/example/traced/ExampleTracedSuite.scala
@@ -19,21 +19,27 @@ import com.dimitarg.example.util.IntegrationTestConfig
 
 object ExampleTracedSuite extends Suite {
 
-    override def suitesStream: Stream[IO,Test] =
-    Stream.resource(makeEntryPoint.flatMap(_.root("ExampleTracedSuite"))).flatMap { implicit rootSpan =>
-      val service = SomeTracedService.apply[App]
-      tracedParSuite("Service tests")(serviceTests(service)) ++
-        tracedSeqSuite("Some other tests")(someOtherTests)
-    }
+  override def suitesStream: Stream[IO, Test] =
+    Stream
+      .resource(makeEntryPoint.flatMap(_.root("ExampleTracedSuite")))
+      .flatMap { implicit rootSpan =>
+        val service = SomeTracedService.apply[App]
+        tracedParSuite("Service tests")(serviceTests(service)) ++
+          tracedSeqSuite("Some other tests")(someOtherTests)
+      }
 
   def serviceTests(service: SomeTracedService[App]): List[TracedTest] = List(
     tracedTest("SomeTracedService.foo test") { span =>
-      service.translate(provideSpan(span)).foo
-        .as(success) 
+      service
+        .translate(provideSpan(span))
+        .foo
+        .as(success)
     },
     tracedTest("SomeTracedService.bar test") { span =>
-      service.translate(provideSpan(span)).bar
-        .as(success) 
+      service
+        .translate(provideSpan(span))
+        .bar
+        .as(success)
     }
   )
 
@@ -41,8 +47,9 @@ object ExampleTracedSuite extends Suite {
     tracedTest("some other test 1") { _ =>
       expect(1 === 1).pure[IO]
     },
-    tracedTest("some other test 2") { span => 
-      span.put("app.important.info" -> 42)
+    tracedTest("some other test 2") { span =>
+      span
+        .put("app.important.info" -> 42)
         .as(expect(2 === 2))
     }
   )
@@ -53,14 +60,14 @@ object ExampleTracedSuite extends Suite {
       case IntegrationTestConfig.CI(hcKey) =>
         natchez.honeycomb.Honeycomb.entryPoint[IO](
           service = "weaver-test-extra-tests"
-         ) { builder =>
+        ) { builder =>
           IO.delay {
             builder
               .setDataset("weaver-test-extra-tests")
               .setWriteKey(hcKey)
               .setGlobalFields(
                 Map(
-                  "service_name" -> "weaver-test-extra-tests",
+                  "service_name" -> "weaver-test-extra-tests"
                 ).asJava
               )
               .build
diff --git a/src/test/scala/com/dimitarg/example/util/IntegrationTestConfig.scala b/src/test/scala/com/dimitarg/example/util/IntegrationTestConfig.scala
index 7ec4f58..21f145a 100644
--- a/src/test/scala/com/dimitarg/example/util/IntegrationTestConfig.scala
+++ b/src/test/scala/com/dimitarg/example/util/IntegrationTestConfig.scala
@@ -7,8 +7,8 @@ sealed trait IntegrationTestConfig
 object IntegrationTestConfig {
 
   final case class CI(
-    honeycombWriteKey: String,
-  )  extends IntegrationTestConfig {
+      honeycombWriteKey: String
+  ) extends IntegrationTestConfig {
     override def toString = "IntegrationTestConfig.CI()"
   }
 
@@ -23,7 +23,7 @@ object IntegrationTestConfig {
     }
   } yield hcKey.fold[IntegrationTestConfig] {
     IntegrationTestConfig.NotCI
-  } { hcKey => 
+  } { hcKey =>
     if (isCi) {
       IntegrationTestConfig.CI(hcKey)
     } else {
diff --git a/src/test/scala/weaver/pure/ApiTests.scala b/src/test/scala/weaver/pure/ApiTests.scala
index f68f2ae..046e794 100644
--- a/src/test/scala/weaver/pure/ApiTests.scala
+++ b/src/test/scala/weaver/pure/ApiTests.scala
@@ -3,17 +3,21 @@ package weaver.pure
 import cats.effect.IO
 import fs2.Stream
 import scala.util.control.NoStackTrace
-   
+
 object ApiTest extends Suite {
 
-  override def suitesStream: Stream[IO,Test] = parSuite(List(
-    test("`test` raises IO errors as Expectations failures") {
-      val tst = test("something")(IO.raiseError(SomeError))
-      tst.map { result =>
-        expect(result.run.run.isInvalid) // as opposed to this raising an io error and failing the test
+  override def suitesStream: Stream[IO, Test] = parSuite(
+    List(
+      test("`test` raises IO errors as Expectations failures") {
+        val tst = test("something")(IO.raiseError(SomeError))
+        tst.map { result =>
+          expect(
+            result.run.run.isInvalid
+          ) // as opposed to this raising an io error and failing the test
+        }
       }
-    }
-  ))
+    )
+  )
 
   final case object SomeError extends Exception with NoStackTrace
 }
diff --git a/src/test/scala/weaver/pure/ResourceHandlingTest.scala b/src/test/scala/weaver/pure/ResourceHandlingTest.scala
index 9fd98e0..b02c8ff 100644
--- a/src/test/scala/weaver/pure/ResourceHandlingTest.scala
+++ b/src/test/scala/weaver/pure/ResourceHandlingTest.scala
@@ -8,7 +8,7 @@ import fs2.Stream
 
 object ResourceHandlingTest extends Suite {
 
-  override def suitesStream: Stream[IO,Test] =
+  override def suitesStream: Stream[IO, Test] =
     Stream.resource(SomeService.make).flatMap { service =>
       Stream.eval(
         test("Stream lifecycle is correctly handled") {
@@ -19,20 +19,23 @@ object ResourceHandlingTest extends Suite {
 }
 
 final case class SomeService(released: Ref[IO, Boolean]) {
-  
+
   val latency = 3.seconds
 
   val doSomething: IO[Unit] = IO.sleep(latency) >> released.get.ifM(
     IO.unit,
-    IO.raiseError(new RuntimeException("SomeService already released. Cannot do things"))
+    IO.raiseError(
+      new RuntimeException("SomeService already released. Cannot do things")
+    )
   )
 }
 
 object SomeService {
-  val make: Resource[IO, SomeService] = Resource.make {
-    Ref.of[IO, Boolean](true)
-  } { ref =>
-    ref.set(false)
-  }.map(SomeService(_))
+  val make: Resource[IO, SomeService] = Resource
+    .make {
+      Ref.of[IO, Boolean](true)
+    } { ref =>
+      ref.set(false)
+    }
+    .map(SomeService(_))
 }
-
diff --git a/src/test/scala/weaver/pure/UtilitiesTest.scala b/src/test/scala/weaver/pure/UtilitiesTest.scala
index dcf4ec2..c29022c 100644
--- a/src/test/scala/weaver/pure/UtilitiesTest.scala
+++ b/src/test/scala/weaver/pure/UtilitiesTest.scala
@@ -8,7 +8,7 @@ import util._
 
 object UtilitiesTest extends Suite {
 
-  override def suitesStream: Stream[IO,Test] = Stream(
+  override def suitesStream: Stream[IO, Test] = Stream(
     pureTest("outcomeToString") {
 
       val test = Test("some test", expect(1 === 2))
@@ -16,10 +16,8 @@ object UtilitiesTest extends Suite {
 
       expect(asString.contains("UtilitiesTest.scala")) and
         expect(asString.contains("expect(1 === 2)"))
-      
-    }
 
+    }
   )
 
-  
 }