diff --git a/Cargo.lock b/Cargo.lock
index 9f1fde31d..f982258e1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -5746,7 +5746,7 @@ dependencies = [
 [[package]]
 name = "p4rs"
 version = "0.1.0"
-source = "git+https://github.com/oxidecomputer/p4?branch=main#33d646041f13062cc39c6f38725d8c95d4024a2f"
+source = "git+https://github.com/oxidecomputer/p4?branch=zl/multicast#0e8a28a2edce0a96dd0ac3a3df95af3d58cee839"
 dependencies = [
  "bitvec",
  "num",
@@ -8819,7 +8819,7 @@ dependencies = [
 [[package]]
 name = "softnpu"
 version = "0.2.0"
-source = "git+https://github.com/oxidecomputer/softnpu#3828225fd5719dc985a300e36850d25a0405eba6"
+source = "git+https://github.com/oxidecomputer/softnpu?branch=zl/multicast#284c6830722548714128e63ea04bcca78ee27154"
 dependencies = [
  "p4rs",
  "serde",
diff --git a/Cargo.toml b/Cargo.toml
index f6105a56a..d530721c5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -78,7 +78,7 @@ dlpi = { git = "https://github.com/oxidecomputer/dlpi-sys", branch = "main" }
 ispf = { git = "https://github.com/oxidecomputer/ispf" }
 libloading = "0.7"
 p9ds = { git = "https://github.com/oxidecomputer/p9fs" }
-softnpu = { git = "https://github.com/oxidecomputer/softnpu" }
+softnpu = { git = "https://github.com/oxidecomputer/softnpu", branch = "zl/multicast" }
 
 # Omicron-related
 internal-dns-resolver = { git = "https://github.com/oxidecomputer/omicron", rev = "fa779b29af7a8656657ccca6ec531446188d916c" }
@@ -148,7 +148,7 @@ newtype-uuid = { version = "1.0.1", features = [ "v4" ] }
 # "feature" for `utsname`, "poll" for `PollFlags`
 nix = { version = "0.31", features = [ "feature", "poll" ] }
 owo-colors = "4"
-oxide-tokio-rt = "0.1.2"
+oxide-tokio-rt = "0.1.4"
 paste = "1.0.15"
 pin-project-lite = "0.2.13"
 proc-macro2 = "1.0"