diff --git a/build.sbt b/build.sbt
index e80b2a5e..c3aa9515 100644
--- a/build.sbt
+++ b/build.sbt
@@ -72,7 +72,7 @@ def isolateAllTests(tests: Seq[TestDefinition]) = tests map { test =>
 // -- Rocket Chip --
 
 // This needs to stay in sync with the chisel3 and firrtl git submodules
-val chiselVersion = "3.4.0"
+val chiselVersion = "3.4.1"
 lazy val chiselRef = ProjectRef(workspaceDirectory / "chisel3", "chisel")
 lazy val chiselLib = "edu.berkeley.cs" %% "chisel3" % chiselVersion
 lazy val chiselLibDeps = (chiselRef / Keys.libraryDependencies)
@@ -81,7 +81,7 @@ lazy val chiselLibDeps = (chiselRef / Keys.libraryDependencies)
 //   keeping scalaVersion in sync with chisel3 to the minor version
 lazy val chiselPluginLib = "edu.berkeley.cs" % "chisel3-plugin" % chiselVersion cross CrossVersion.full
 
-val firrtlVersion = "1.4.+"
+val firrtlVersion = "1.4.1"
 lazy val firrtlRef = ProjectRef(workspaceDirectory / "firrtl", "firrtl")
 lazy val firrtlLib = "edu.berkeley.cs" %% "firrtl" % firrtlVersion
 val firrtlLibDeps = settingKey[Seq[sbt.librarymanagement.ModuleID]]("FIRRTL Library Dependencies sans antlr4")
diff --git a/generators/rocket-chip b/generators/rocket-chip
index 577994e3..a7b016e4 160000
--- a/generators/rocket-chip
+++ b/generators/rocket-chip
@@ -1 +1 @@
-Subproject commit 577994e38e3115cafa3a232b0fc60584aacb996e
+Subproject commit a7b016e46e22e4fdc013357051e30511f80df082
diff --git a/tools/chisel3 b/tools/chisel3
index d379dca4..58d38f96 160000
--- a/tools/chisel3
+++ b/tools/chisel3
@@ -1 +1 @@
-Subproject commit d379dca4413d4cb08b02165a493faff01f3ddbb9
+Subproject commit 58d38f9620e7e91e4668266686484073c0ba7d2e
diff --git a/tools/firrtl b/tools/firrtl
index 05d047a9..7756f8f9 160000
--- a/tools/firrtl
+++ b/tools/firrtl
@@ -1 +1 @@
-Subproject commit 05d047a9befda3877f5d8a0a9e1076ffd520ddf9
+Subproject commit 7756f8f9634b68a1375d2c2ca13abc5742234201