diff --git a/.travis.yml b/.travis.yml
index 6efda1c..e4eda69 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,7 @@ language: scala
 scala:
    - 2.12.6
    - 2.11.12
-   - 2.13.0-M3
+   - 2.13.0-M4
 env:
 - JDK=oraclejdk8
 - JDK=openjdk8
diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index ddb5c09..b2d3917 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -4,8 +4,8 @@ object Version {
   val logback   = "1.2.3"
   val mockito   = "1.10.19"
   val scala     = "2.12.6"
-  val crossScala = List(scala, "2.11.12", "2.13.0-M3")
-  val scalaTest = "3.0.5-M1"  // only version available for 2.13.0-M3; otherwise same as 3.0.4
+  val crossScala = List(scala, "2.11.12", "2.13.0-M4")
+  val scalaTest = "3.0.6-SNAP1"  // only version available for 2.13.0-M4
   val slf4j     = "1.7.25"
 }