diff --git a/.scalafmt.conf b/.scalafmt.conf
new file mode 100644
index 0000000..bda502a
--- /dev/null
+++ b/.scalafmt.conf
@@ -0,0 +1,3 @@
+maxColumn = 180
+style = defaultWithAlign
+optIn.breaksInsideChains = true
diff --git a/build.sbt b/build.sbt
index 42b3bfe..309c60f 100644
--- a/build.sbt
+++ b/build.sbt
@@ -80,10 +80,10 @@ libraryDependencies ++= Seq(
   "junit"               % "junit"              % "4.8.2" % "test",
   "org.codehaus.plexus" % "plexus-classworlds" % "2.4"   % "test",
   "org.xerial.java"     % "xerial-core"        % "2.1"   % "test",
-  "org.xerial"          % "xerial-core"        % "3.2.3" % "test",
-  "org.scalatest"       % "scalatest_2.11"     % "2.2.0" % "test",
+  "org.wvlet.airframe"  %% "airframe-log"      % "0.25"  % "test",
+  "org.scalatest"       %% "scalatest"         % "3.0.4" % "test",
   "org.osgi"            % "org.osgi.core"      % "4.3.0" % "provided",
-  "com.novocode"        % "junit-interface"    % "0.10"  % "test"
+  "com.novocode"        % "junit-interface"    % "0.11"  % "test"
 )
 
 enablePlugins(SbtOsgi)
diff --git a/src/test/scala/org/xerial/snappy/SnappyPerformanceTest.scala b/src/test/scala/org/xerial/snappy/SnappyPerformanceTest.scala
index 31110dc..2a1c2a9 100644
--- a/src/test/scala/org/xerial/snappy/SnappyPerformanceTest.scala
+++ b/src/test/scala/org/xerial/snappy/SnappyPerformanceTest.scala
@@ -2,8 +2,6 @@ package org.xerial.snappy
 
 import java.io.{ByteArrayOutputStream, ByteArrayInputStream}
 
-import xerial.core.log.LogLevel
-
 import scala.util.Random
 
 /**
@@ -26,7 +24,7 @@ class SnappyPerformanceTest extends SnappySpec {
 
       val input = data
 
-      time("compression", repeat = 100, logLevel = LogLevel.INFO) {
+      time("compression", repeat = 100) {
         // 0.037 sec. => 0.026
         block("default") {
           val out  = new ByteArrayOutputStream()
diff --git a/src/test/scala/org/xerial/snappy/SnappySpec.scala b/src/test/scala/org/xerial/snappy/SnappySpec.scala
index 02bbb63..f4c4d72 100644
--- a/src/test/scala/org/xerial/snappy/SnappySpec.scala
+++ b/src/test/scala/org/xerial/snappy/SnappySpec.scala
@@ -1,14 +1,15 @@
 package org.xerial.snappy
 
 import org.scalatest._
-import xerial.core.log.Logger
-import xerial.core.util.Timer
+import wvlet.log.LogFormatter.SourceCodeLogFormatter
+import wvlet.log.{LogSupport, Logger}
+import wvlet.log.io.Timer
 
 /**
   *
   */
-trait SnappySpec extends WordSpec with Matchers with GivenWhenThen with OptionValues with BeforeAndAfter with Timer with Logger {
+trait SnappySpec extends WordSpec with Matchers with GivenWhenThen with OptionValues with BeforeAndAfter with Timer with LogSupport {
+  Logger.setDefaultFormatter(SourceCodeLogFormatter)
 
   implicit def toTag(s: String): Tag = Tag(s)
-
 }