diff --git a/Cargo.lock b/Cargo.lock
index 416766b9cba..f3958939093 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2583,7 +2583,7 @@ dependencies = [
  "slog-term",
  "termios",
  "tokio",
- "tokio-tungstenite",
+ "tokio-tungstenite 0.21.0",
  "uuid",
 ]
 
@@ -5033,7 +5033,7 @@ dependencies = [
  "thiserror",
  "tokio",
  "tokio-stream",
- "tokio-tungstenite",
+ "tokio-tungstenite 0.21.0",
  "toml 0.8.10",
  "uuid",
 ]
@@ -6681,7 +6681,7 @@ dependencies = [
  "slog",
  "thiserror",
  "tokio",
- "tokio-tungstenite",
+ "tokio-tungstenite 0.20.1",
  "uuid",
 ]
 
@@ -6711,7 +6711,7 @@ dependencies = [
  "slog-term",
  "thiserror",
  "tokio",
- "tokio-tungstenite",
+ "tokio-tungstenite 0.20.1",
  "uuid",
 ]
 
@@ -9357,7 +9357,19 @@ dependencies = [
  "futures-util",
  "log",
  "tokio",
- "tungstenite",
+ "tungstenite 0.20.1",
+]
+
+[[package]]
+name = "tokio-tungstenite"
+version = "0.21.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c83b561d025642014097b66e6c1bb422783339e0909e4429cde4749d1990bc38"
+dependencies = [
+ "futures-util",
+ "log",
+ "tokio",
+ "tungstenite 0.21.0",
 ]
 
 [[package]]
@@ -9756,6 +9768,25 @@ dependencies = [
  "utf-8",
 ]
 
+[[package]]
+name = "tungstenite"
+version = "0.21.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ef1a641ea34f399a848dea702823bbecfb4c486f911735368f1f137cb8257e1"
+dependencies = [
+ "byteorder",
+ "bytes",
+ "data-encoding",
+ "http 1.0.0",
+ "httparse",
+ "log",
+ "rand 0.8.5",
+ "sha1",
+ "thiserror",
+ "url",
+ "utf-8",
+]
+
 [[package]]
 name = "typed-path"
 version = "0.7.0"
diff --git a/Cargo.toml b/Cargo.toml
index 299d715d677..a85b300683c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -402,7 +402,7 @@ tofino = { git = "http://github.com/oxidecomputer/tofino", branch = "main" }
 tokio = "1.36.0"
 tokio-postgres = { version = "0.7", features = [ "with-chrono-0_4", "with-uuid-1" ] }
 tokio-stream = "0.1.14"
-tokio-tungstenite = "0.20"
+tokio-tungstenite = "0.21"
 tokio-util = { version = "0.7.10", features = ["io", "io-util"] }
 toml = "0.8.10"
 toml_edit = "0.22.6"