diff --git a/.travis.yml b/.travis.yml
index 6fc769e3..8aede91e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,7 @@ scala:
   - 2.10.7
   - 2.11.12
   - 2.12.6
-  - 2.13.0-M4
+  - 2.13.0-M5
 
 script:
   - sbt "++ ${TRAVIS_SCALA_VERSION}!" test mimaReportBinaryIssues
diff --git a/build.sbt b/build.sbt
index 23bdd9e6..cf599113 100644
--- a/build.sbt
+++ b/build.sbt
@@ -27,8 +27,8 @@ libraryDependencies ++= (CrossVersion.partialVersion(scalaVersion.value) match {
     "org.scalacheck" %% "scalacheck" % "1.13.4" % "test"
   )
   case Some((2, n)) if n >= 11 => Seq(
-    "org.specs2" %% "specs2-core" % "4.3.2" % "test",
-    "org.specs2" %% "specs2-scalacheck" % "4.3.2" % "test",
+    "org.specs2" %% "specs2-core" % "4.3.5" % "test",
+    "org.specs2" %% "specs2-scalacheck" % "4.3.5" % "test",
     "org.scalacheck" %% "scalacheck" % "1.14.0" % "test"
   )
   case _ => Nil
@@ -67,7 +67,7 @@ mimaBinaryIssueFilters := Seq(
 // publishing
 ///////////////
 
-crossScalaVersions := Seq("2.12.6", "2.10.7", "2.11.12", "2.13.0-M4")
+crossScalaVersions := Seq("2.12.6", "2.10.7", "2.11.12", "2.13.0-M5")
 
 publishMavenStyle := true