diff --git a/Cargo.lock b/Cargo.lock
index 3acfc4d2..2a59c383 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1592,7 +1592,7 @@ dependencies = [
  "serde_json",
  "thiserror",
  "tokio",
- "tokio-tungstenite 0.18.0",
+ "tokio-tungstenite 0.20.1",
  "tracing",
  "uuid 1.5.0",
 ]
@@ -7463,18 +7463,17 @@ dependencies = [
 
 [[package]]
 name = "tokio-tungstenite"
-version = "0.18.0"
+version = "0.20.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "54319c93411147bced34cb5609a80e0a8e44c5999c93903a81cd866630ec0bfd"
+checksum = "212d5dcb2a1ce06d81107c3d0ffa3121fe974b73f068c8282cb1c32328113b6c"
 dependencies = [
  "futures-util",
  "log",
- "rustls 0.20.9",
+ "rustls 0.21.8",
  "tokio",
- "tokio-rustls 0.23.4",
- "tungstenite 0.18.0",
- "webpki",
- "webpki-roots 0.22.6",
+ "tokio-rustls 0.24.1",
+ "tungstenite 0.20.1",
+ "webpki-roots 0.25.2",
 ]
 
 [[package]]
@@ -7663,23 +7662,22 @@ dependencies = [
 
 [[package]]
 name = "tungstenite"
-version = "0.18.0"
+version = "0.20.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "30ee6ab729cd4cf0fd55218530c4522ed30b7b6081752839b68fcec8d0960788"
+checksum = "9e3dac10fd62eaf6617d3a904ae222845979aec67c615d1c842b4002c7666fb9"
 dependencies = [
- "base64 0.13.1",
  "byteorder",
  "bytes",
+ "data-encoding",
  "http",
  "httparse",
  "log",
  "rand 0.8.5",
- "rustls 0.20.9",
+ "rustls 0.21.8",
  "sha1 0.10.6",
  "thiserror",
  "url",
  "utf-8",
- "webpki",
 ]
 
 [[package]]
diff --git a/crates/cmds-pdg/Cargo.toml b/crates/cmds-pdg/Cargo.toml
index 5bcb51d5..236ee4db 100644
--- a/crates/cmds-pdg/Cargo.toml
+++ b/crates/cmds-pdg/Cargo.toml
@@ -12,7 +12,7 @@ flow-lib = { workspace = true }
 futures = "0.3.28"
 serde = { version = "1.0.159", features = ["derive"] }
 serde_json = "1.0.95"
-tokio-tungstenite = { version = "0.18.0", features = [
+tokio-tungstenite = { version = "0.20.1", features = [
     "rustls-tls-webpki-roots",
 ] }
 thiserror = "1.0.40"