diff --git a/bin/buildAll.sh b/bin/buildAll.sh
index 5ab73e4..de1a536 100755
--- a/bin/buildAll.sh
+++ b/bin/buildAll.sh
@@ -8,4 +8,4 @@ cp src/native/lib/libsass.so src/main/resources/linux-x86/libsass.so
 ./bin/docker/buildLinux/x86/dockcross make -C src/native/ clean
 
 docker run --rm -v $(pwd)/bin/docker/buildLinux/x86-64/:/Compile -v $(pwd):/sass libsass/linux:1
-docker run --rm -v $(pwd)/bin/docker/buildDarwin:/Compile -v $(pwd):/sass libsass/darwin:1
+docker run --rm -v $(pwd)/bin/docker/buildDarwin-x86-64:/Compile -v $(pwd):/sass libsass/darwin-x86-64:1
diff --git a/bin/docker/buildDarwin-aarch64/readme.md b/bin/docker/buildDarwin-aarch64/readme.md
new file mode 100644
index 0000000..59f8bb9
--- /dev/null
+++ b/bin/docker/buildDarwin-aarch64/readme.md
@@ -0,0 +1 @@
+Needs something to compile libsaas on `arm64` arch.
\ No newline at end of file
diff --git a/bin/docker/buildDarwin/Dockerfile b/bin/docker/buildDarwin-x86-64/Dockerfile
similarity index 100%
rename from bin/docker/buildDarwin/Dockerfile
rename to bin/docker/buildDarwin-x86-64/Dockerfile
diff --git a/bin/docker/buildDarwin/make.sh b/bin/docker/buildDarwin-x86-64/make.sh
similarity index 82%
rename from bin/docker/buildDarwin/make.sh
rename to bin/docker/buildDarwin-x86-64/make.sh
index 0f05f0a..96698e5 100755
--- a/bin/docker/buildDarwin/make.sh
+++ b/bin/docker/buildDarwin-x86-64/make.sh
@@ -2,7 +2,9 @@
 cd /sass
 
 rm -r src/main/resources/darwin
+rm -r src/main/resources/darwin-x86-64
 mkdir -p src/main/resources/darwin
+mkdir -p src/main/resources/darwin-x86-64
 
 # *** Build libsass
 make -C src/native clean
@@ -21,6 +23,7 @@ BUILD=shared \
 
 # *** Copy to target location. Note that the makefile from libsass will output a .so file. Renaming it to .dylib is good enough.
 cp src/native/lib/libsass.so src/main/resources/darwin/libsass.dylib || exit 1
+cp src/native/lib/libsass.so src/main/resources/darwin-x86-64/libsass.dylib || exit 1
 
 # *** Cleanup
 cd /sass/src/native
diff --git a/build.sbt b/build.sbt
index d1580e7..23dd1a5 100644
--- a/build.sbt
+++ b/build.sbt
@@ -16,8 +16,10 @@ javaOptions += "-Djna.nosys=true"
 addSbtPlugin("com.typesafe.sbt" % "sbt-web" % "1.4.4")
 
 libraryDependencies ++= Seq(
-  "org.scalatest" %% "scalatest" % "3.0.5" % "test",
-  "net.java.dev.jna" % "jna" % "5.5.0"
+  "org.scalatest" %% "scalatest" % "3.2.11" % "test",
+  "org.scalatest" %% "scalatest-mustmatchers" % "3.2.11" % "test",
+  "org.scalatest" %% "scalatest-funspec" % "3.2.11" % "test",
+  "net.java.dev.jna" % "jna" % "5.10.0"
 )
 
 // Compiler settings
@@ -32,7 +34,7 @@ scalacOptions ++= Seq(
   "-encoding",
   "UTF-8"
 )
-javacOptions ++= Seq("-source", "1.7", "-target", "1.7", "-Xlint")
+javacOptions ++= Seq("-source", "1.8", "-target", "1.8", "-Xlint")
 
 // Bintray settings
 bintrayOrganization in bintray := None
diff --git a/project/build.properties b/project/build.properties
index 797e7cc..c8fcab5 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.3.10
+sbt.version=1.6.2
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 849ba44..b35ee93 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -12,4 +12,6 @@ addSbtPlugin("de.heikoseeberger" % "sbt-header" % "3.0.1")
 
 addSbtPlugin("org.scalastyle" %% "scalastyle-sbt-plugin" % "1.0.0")
 
+addSbtPlugin("com.timushev.sbt" % "sbt-updates" % "0.5.3")
+
 addCompilerPlugin("org.psywerx.hairyfotr" %% "linter" % "0.1.17")
diff --git a/src/main/resources/darwin-aarch64/libsass.dylib b/src/main/resources/darwin-aarch64/libsass.dylib
new file mode 100644
index 0000000..7a613af
Binary files /dev/null and b/src/main/resources/darwin-aarch64/libsass.dylib differ
diff --git a/src/main/resources/darwin-x86-64/libsass.dylib b/src/main/resources/darwin-x86-64/libsass.dylib
new file mode 100755
index 0000000..70f2db5
Binary files /dev/null and b/src/main/resources/darwin-x86-64/libsass.dylib differ
diff --git a/src/test/scala/org/irundaia/sass/SassCompilerTest.scala b/src/test/scala/org/irundaia/sass/SassCompilerTest.scala
index da1b0e1..3766a0c 100644
--- a/src/test/scala/org/irundaia/sass/SassCompilerTest.scala
+++ b/src/test/scala/org/irundaia/sass/SassCompilerTest.scala
@@ -18,11 +18,12 @@ package org.irundaia.sass
 
 import java.nio.file.{Paths, Files}
 
-import org.scalatest.{FunSpec, MustMatchers}
+import org.scalatest.funspec.AnyFunSpec;
+import org.scalatest.matchers.must._;
 
 import scala.io.Source
 
-class SassCompilerTest extends FunSpec with MustMatchers {
+class SassCompilerTest extends AnyFunSpec with Matchers {
   val testDir = Files.createTempDirectory("sbt-sassify")
   val compilerSettings = CompilerSettings(Minified, true, true, Auto, Seq(), "", 10, "css")