diff --git a/.gitignore b/.gitignore
index 7097071a..d4f98a13 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,32 @@
+etc/bootstrap-local.conf
+
+.class
+*.log
+.history
+
+target/
+lib_managed/
+src_managed/
+project/boot/
+project/plugins/project/
+project/activator-sbt*
+
+.env
+
+# IntelliJ
+.idea/
+*.iml
+*.iws
+
+# Metals
+.metals/
+.bloop/
+
+# Mac
 .DS_Store
-target
-project/boot
+
+# vim swap files
 *.swp
-.idea
+.*.swp
+
+.vscode
diff --git a/build.sbt b/build.sbt
index 2e7ef24c..9f918923 100644
--- a/build.sbt
+++ b/build.sbt
@@ -6,12 +6,12 @@ lazy val commonSettings: Seq[Setting[_]] = Seq(
   organization := "net.debasishg",
   version := "3.20",
   scalaVersion := "2.12.10",
-  crossScalaVersions := Seq("2.12.10", "2.11.12", "2.10.7", "2.13.0"),
+  crossScalaVersions := Seq("2.12.10", "2.11.12", "2.10.7", "2.13.1"),
 
   scalacOptions in Compile ++= Seq( "-unchecked", "-feature", "-language:postfixOps", "-deprecation" ),
 
   resolvers ++= Seq(
-    "typesafe repo" at "http://repo.typesafe.com/typesafe/releases/"
+    ("typesafe repo" at "http://repo.typesafe.com/typesafe/releases/").withAllowInsecureProtocol(true)
   )
 )