diff --git a/build.sbt b/build.sbt
index 907c072..ed5aa82 100644
--- a/build.sbt
+++ b/build.sbt
@@ -2,7 +2,7 @@ import scalapb.compiler.Version.scalapbVersion
 
 scalaVersion := "2.13.12"
 
-crossScalaVersions := Seq("2.12.18", "2.13.16", "3.3.3")
+crossScalaVersions := Seq("2.12.20", "2.13.16", "3.3.3")
 
 ThisBuild / organization := "com.thesamet.scalapb"
 
@@ -22,7 +22,7 @@ val protobufJava = "com.google.protobuf" % "protobuf-java" % "3.25.8"
 libraryDependencies ++= Seq(
   "com.thesamet.scalapb" %% "scalapb-runtime" % scalapbVersion,
   "com.thesamet.scalapb" %% "scalapb-runtime" % scalapbVersion % "protobuf,test",
-  "org.scalatest" %% "scalatest" % "3.2.17" % "test",
+  "org.scalatest" %% "scalatest" % "3.2.19" % "test",
   "org.scalatestplus" %% "scalacheck-1-17" % "3.2.17.0" % "test",
   "com.google.protobuf" % "protobuf-java-util" % protobufJava.revision % "test",
   protobufJava % "protobuf",
diff --git a/project/build.properties b/project/build.properties
index e8a1e24..04267b1 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.9.7
+sbt.version=1.9.9