diff --git a/.scalafmt.conf b/.scalafmt.conf
index d849ba9a..ed0954dd 100644
--- a/.scalafmt.conf
+++ b/.scalafmt.conf
@@ -1,5 +1,5 @@
   
-version = "2.6.4"
+version = "2.7.2"
 maxColumn = 110
 docstrings = JavaDoc
 assumeStandardLibraryStripMargin = true
diff --git a/build.sbt b/build.sbt
index 64b89cac..02abe500 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,5 +1,5 @@
 // compiler plugins
-addCompilerPlugin("org.scalameta" % "semanticdb-scalac" % "4.3.20" cross CrossVersion.full)
+addCompilerPlugin("org.scalameta" % "semanticdb-scalac" % "4.3.22" cross CrossVersion.full)
 
 name := "scalac-scapegoat-plugin"
 organization := "com.sksamuel.scapegoat"
@@ -105,11 +105,11 @@ libraryDependencies ++= Seq(
   "org.scala-lang.modules" %% "scala-xml"     % "1.3.0" excludeAll (
     ExclusionRule(organization = "org.scala-lang")
   ),
-  "org.scala-lang.modules" %% "scala-collection-compat" % "2.1.6" excludeAll (
+  "org.scala-lang.modules" %% "scala-collection-compat" % "2.2.0" excludeAll (
     ExclusionRule(organization = "org.scala-lang")
   ),
   "org.scala-lang" % "scala-compiler" % scalaVersion.value % "test",
-  "org.scalatest"  %% "scalatest"     % "3.2.0"            % "test",
+  "org.scalatest"  %% "scalatest"     % "3.2.2"            % "test",
   "org.mockito"    % "mockito-all"    % "1.10.19"          % "test",
   "joda-time"      % "joda-time"      % "2.10.6"           % "test",
   "org.joda"       % "joda-convert"   % "2.2.1"            % "test",
diff --git a/project/plugins.sbt b/project/plugins.sbt
index c41e35d8..5c86a533 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -2,8 +2,8 @@ resolvers += Classpaths.sbtPluginReleases
 
 addSbtPlugin("com.geirsson"  % "sbt-ci-release" % "1.5.3")
 addSbtPlugin("com.eed3si9n"  % "sbt-assembly"   % "0.14.10")
-addSbtPlugin("org.scalameta" % "sbt-scalafmt"   % "2.4.0")
-addSbtPlugin("ch.epfl.scala" % "sbt-scalafix"   % "0.9.19")
+addSbtPlugin("org.scalameta" % "sbt-scalafmt"   % "2.4.2")
+addSbtPlugin("ch.epfl.scala" % "sbt-scalafix"   % "0.9.21")
 addSbtPlugin("org.scoverage" % "sbt-scoverage"  % "1.6.1")
 
 if (System.getProperty("add-scapegoat-plugin") == "true")
diff --git a/src/main/scala/com/sksamuel/scapegoat/inspections/collections/AvoidSizeNotEqualsZero.scala b/src/main/scala/com/sksamuel/scapegoat/inspections/collections/AvoidSizeNotEqualsZero.scala
index ec14c577..fbb59cc7 100644
--- a/src/main/scala/com/sksamuel/scapegoat/inspections/collections/AvoidSizeNotEqualsZero.scala
+++ b/src/main/scala/com/sksamuel/scapegoat/inspections/collections/AvoidSizeNotEqualsZero.scala
@@ -25,9 +25,9 @@ class AvoidSizeNotEqualsZero
           override def inspect(tree: Tree): Unit = {
             tree match {
               case Apply(
-                    Select(Select(_, Length | Size), TermName("$bang$eq") | TermName("$greater")),
+                    Select(Select(q, Length | Size), TermName("$bang$eq") | TermName("$greater")),
                     List(Literal(Constant(0)))
-                  ) =>
+                  ) if isTraversable(q) =>
                 context.warn(tree.pos, self, tree.toString.take(100))
               case _ => continue(tree)
             }
diff --git a/src/test/scala/com/sksamuel/scapegoat/inspections/collections/AvoidSizeNotEqualsZeroTest.scala b/src/test/scala/com/sksamuel/scapegoat/inspections/collections/AvoidSizeNotEqualsZeroTest.scala
index f9d74e19..704f3792 100644
--- a/src/test/scala/com/sksamuel/scapegoat/inspections/collections/AvoidSizeNotEqualsZeroTest.scala
+++ b/src/test/scala/com/sksamuel/scapegoat/inspections/collections/AvoidSizeNotEqualsZeroTest.scala
@@ -25,5 +25,17 @@ class AvoidSizeNotEqualsZeroTest extends InspectionTest {
       compileCodeSnippet(code)
       compiler.scapegoat.feedback.warnings.size shouldBe 10
     }
+    // github issue #414
+    "should ignore durations" in {
+      val code = """object Test {
+                   |case class Duration(start: Long, stop: Long) {
+                   |  def length: Long = stop - start
+                   |  def nonEmpty: Boolean = length > 0
+                   |  }
+                    } """.stripMargin
+
+      compileCodeSnippet(code)
+      compiler.scapegoat.feedback.warnings.size shouldBe 0
+    }
   }
 }