diff --git a/build.sbt b/build.sbt
index 0ed97932..3757a496 100644
--- a/build.sbt
+++ b/build.sbt
@@ -30,7 +30,7 @@ name := "treadle"
 
 organization := "edu.berkeley.cs"
 
-version := "1.1.5"
+version := "1.1.6"
 
 scalaVersion := "2.12.7"
 
@@ -57,7 +57,7 @@ assemblyOutputPath in assembly := file("./utils/bin/treadle.jar")
 
 
 // Provide a managed dependency on X if -DXVersion="" is supplied on the command line.
-val defaultVersions = Map("firrtl" -> "1.2.5")
+val defaultVersions = Map("firrtl" -> "1.2.6")
 
 libraryDependencies ++= (Seq("firrtl").map {
   dep: String => "edu.berkeley.cs" %% dep % sys.props.getOrElse(dep + "Version", defaultVersions(dep)) })
diff --git a/build.sc b/build.sc
index c9b4d89e..87d0ae9b 100644
--- a/build.sc
+++ b/build.sc
@@ -13,7 +13,7 @@ trait CrossUnRootedSbtModule extends CrossSbtModule {
 }
 
 trait CommonModule extends CrossUnRootedSbtModule with PublishModule {
-  def publishVersion = "1.1.5"
+  def publishVersion = "1.1.6"
 
   def pomSettings = PomSettings(
     description = artifactName(),
@@ -69,7 +69,7 @@ object treadle extends Cross[TreadleModule](crossVersions: _*) {
 }
 
 // Provide a managed dependency on X if -DXVersion="" is supplied on the command line.
-val defaultVersions = Map("firrtl" -> "1.2.5")
+val defaultVersions = Map("firrtl" -> "1.2.6")
 
 def getVersion(dep: String, org: String = "edu.berkeley.cs") = {
   val version = sys.env.getOrElse(dep + "Version", defaultVersions(dep))