diff --git a/Cargo.lock b/Cargo.lock
index b238c07527fef..5c4267e17bc91 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3901,7 +3901,7 @@ dependencies = [
 [[package]]
 name = "postgres"
 version = "0.19.4"
-source = "git+https://github.com/neondatabase/rust-postgres.git?branch=async-pbkdf2#e5575c82109334731fc8d5e9a8bee2fa61bc29e8"
+source = "git+https://github.com/neondatabase/rust-postgres.git?branch=async-pbkdf2#87d6145ec5f9cf2380b8f0b97266af1cd7392738"
 dependencies = [
  "bytes",
  "fallible-iterator",
@@ -3914,7 +3914,7 @@ dependencies = [
 [[package]]
 name = "postgres-native-tls"
 version = "0.5.0"
-source = "git+https://github.com/neondatabase/rust-postgres.git?branch=async-pbkdf2#e5575c82109334731fc8d5e9a8bee2fa61bc29e8"
+source = "git+https://github.com/neondatabase/rust-postgres.git?branch=async-pbkdf2#87d6145ec5f9cf2380b8f0b97266af1cd7392738"
 dependencies = [
  "native-tls",
  "tokio",
@@ -3925,7 +3925,7 @@ dependencies = [
 [[package]]
 name = "postgres-protocol"
 version = "0.6.4"
-source = "git+https://github.com/neondatabase/rust-postgres.git?branch=async-pbkdf2#e5575c82109334731fc8d5e9a8bee2fa61bc29e8"
+source = "git+https://github.com/neondatabase/rust-postgres.git?branch=async-pbkdf2#87d6145ec5f9cf2380b8f0b97266af1cd7392738"
 dependencies = [
  "base64 0.20.0",
  "byteorder",
@@ -3944,7 +3944,7 @@ dependencies = [
 [[package]]
 name = "postgres-types"
 version = "0.2.4"
-source = "git+https://github.com/neondatabase/rust-postgres.git?branch=async-pbkdf2#e5575c82109334731fc8d5e9a8bee2fa61bc29e8"
+source = "git+https://github.com/neondatabase/rust-postgres.git?branch=async-pbkdf2#87d6145ec5f9cf2380b8f0b97266af1cd7392738"
 dependencies = [
  "bytes",
  "fallible-iterator",
@@ -4226,7 +4226,6 @@ dependencies = [
  "smallvec",
  "smol_str",
  "socket2 0.5.5",
- "stringprep",
  "sync_wrapper",
  "task-local-extensions",
  "thiserror",
@@ -5937,7 +5936,7 @@ dependencies = [
 [[package]]
 name = "tokio-postgres"
 version = "0.7.7"
-source = "git+https://github.com/neondatabase/rust-postgres.git?branch=async-pbkdf2#e5575c82109334731fc8d5e9a8bee2fa61bc29e8"
+source = "git+https://github.com/neondatabase/rust-postgres.git?branch=async-pbkdf2#87d6145ec5f9cf2380b8f0b97266af1cd7392738"
 dependencies = [
  "async-trait",
  "byteorder",
diff --git a/Cargo.toml b/Cargo.toml
index c02b0b5d740bd..356b657263bbb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -146,7 +146,6 @@ signal-hook = "0.3"
 smallvec = "1.11"
 smol_str = { version = "0.2.0", features = ["serde"] }
 socket2 = "0.5"
-stringprep = "0.1"
 strum = "0.24"
 strum_macros = "0.24"
 svg_fmt = "0.4.1"
diff --git a/proxy/Cargo.toml b/proxy/Cargo.toml
index 85c6e83ce84fe..d8112c8bf0c80 100644
--- a/proxy/Cargo.toml
+++ b/proxy/Cargo.toml
@@ -63,7 +63,6 @@ sha2.workspace = true
 smol_str.workspace = true
 smallvec.workspace = true
 socket2.workspace = true
-stringprep.workspace = true
 sync_wrapper.workspace = true
 task-local-extensions.workspace = true
 thiserror.workspace = true