diff --git a/build.sbt b/build.sbt
index eb33194..b7c1389 100644
--- a/build.sbt
+++ b/build.sbt
@@ -116,7 +116,7 @@ lazy val root = Project(id="sopt", base=file("."))
   .settings(
     libraryDependencies ++= Seq(
       "org.scala-lang"       %  "scala-reflect" %  scalaVersion.value,
-      "com.fulcrumgenomics"  %% "commons"       % "0.5.0",
+      "com.fulcrumgenomics"  %% "commons"       % "0.6.1",
       "com.vladsch.flexmark" % "flexmark"       % "0.18.5",
 
       //---------- Test libraries -------------------//
diff --git a/project/build.properties b/project/build.properties
index 0531343..7c58a83 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.1.2
+sbt.version=1.2.6