diff --git a/build.sbt b/build.sbt
index 9d0a7ac0e6..5e559893cd 100644
--- a/build.sbt
+++ b/build.sbt
@@ -63,7 +63,9 @@ def isolateAllTests(tests: Seq[TestDefinition]) = tests map { test =>
 val chiselVersion = "3.5.1"
 
 lazy val chiselSettings = Seq(
-  libraryDependencies ++= Seq("edu.berkeley.cs" %% "chisel3" % chiselVersion),
+  libraryDependencies ++= Seq("edu.berkeley.cs" %% "chisel3" % chiselVersion,
+  "org.apache.commons" % "commons-lang3" % "3.12.0",
+  "org.apache.commons" % "commons-text" % "1.9"),
   addCompilerPlugin("edu.berkeley.cs" % "chisel3-plugin" % chiselVersion cross CrossVersion.full))
 
 val firrtlVersion = "1.5.1"
@@ -119,6 +121,7 @@ lazy val rocketchip = freshProject("rocketchip", rocketChipDir)
     libraryDependencies ++= Seq(
       "org.scala-lang" % "scala-reflect" % scalaVersion.value,
       "org.json4s" %% "json4s-jackson" % "3.6.1",
+      "org.apache.commons" % "commons-lang3" % "3.12.0",
       "org.scalatest" %% "scalatest" % "3.2.0" % "test"
     )
   )