diff --git a/Cargo.lock b/Cargo.lock
index ec5eeb67..9f880fb4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -5588,9 +5588,9 @@ dependencies = [
 
 [[package]]
 name = "serde_with"
-version = "3.8.3"
+version = "3.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e73139bc5ec2d45e6c5fd85be5a46949c1c39a4c18e56915f5eb4c12f975e377"
+checksum = "69cecfa94848272156ea67b2b1a53f20fc7bc638c4a46d2f8abde08f05f4b857"
 dependencies = [
  "base64 0.22.1",
  "chrono",
@@ -5606,9 +5606,9 @@ dependencies = [
 
 [[package]]
 name = "serde_with_macros"
-version = "3.8.3"
+version = "3.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b80d3d6b56b64335c0180e5ffde23b3c5e08c14c585b51a15bd0e95393f46703"
+checksum = "a8fee4991ef4f274617a51ad4af30519438dacb2f56ac773b08a1922ff743350"
 dependencies = [
  "darling 0.20.9",
  "proc-macro2",
diff --git a/crates/axum-utils/Cargo.toml b/crates/axum-utils/Cargo.toml
index a0363cb5..a6994c07 100644
--- a/crates/axum-utils/Cargo.toml
+++ b/crates/axum-utils/Cargo.toml
@@ -29,7 +29,7 @@ mime = "0.3.17"
 rand.workspace = true
 sentry.workspace = true
 serde.workspace = true
-serde_with = "3.8.3"
+serde_with = "3.9.0"
 serde_urlencoded = "0.7.1"
 serde_json.workspace = true
 thiserror.workspace = true
diff --git a/crates/config/Cargo.toml b/crates/config/Cargo.toml
index 89406229..ba61aceb 100644
--- a/crates/config/Cargo.toml
+++ b/crates/config/Cargo.toml
@@ -27,7 +27,7 @@ ulid.workspace = true
 url.workspace = true
 
 serde.workspace = true
-serde_with = { version = "3.8.3", features = ["hex", "chrono"] }
+serde_with = { version = "3.9.0", features = ["hex", "chrono"] }
 serde_json.workspace = true
 
 pem-rfc7468 = "0.7.0"
diff --git a/crates/handlers/Cargo.toml b/crates/handlers/Cargo.toml
index 04006831..8e1b5918 100644
--- a/crates/handlers/Cargo.toml
+++ b/crates/handlers/Cargo.toml
@@ -46,7 +46,7 @@ sqlx.workspace = true
 
 # Various structure (de)serialization
 serde.workspace = true
-serde_with = { version = "3.8.3", features = ["hex", "chrono"] }
+serde_with = { version = "3.9.0", features = ["hex", "chrono"] }
 serde_json.workspace = true
 serde_urlencoded = "0.7.1"
 
diff --git a/crates/jose/Cargo.toml b/crates/jose/Cargo.toml
index 2a7fe782..47433d42 100644
--- a/crates/jose/Cargo.toml
+++ b/crates/jose/Cargo.toml
@@ -28,7 +28,7 @@ schemars.workspace = true
 sec1 = "0.7.3"
 serde.workspace = true
 serde_json.workspace = true
-serde_with = "3.8.3"
+serde_with = "3.9.0"
 sha2 = { version = "0.10.8", features = ["oid"] }
 signature = "2.2.0"
 thiserror.workspace = true
diff --git a/crates/oauth2-types/Cargo.toml b/crates/oauth2-types/Cargo.toml
index e29febd4..eec0fe79 100644
--- a/crates/oauth2-types/Cargo.toml
+++ b/crates/oauth2-types/Cargo.toml
@@ -17,7 +17,7 @@ serde.workspace = true
 serde_json.workspace = true
 language-tags = { version = "0.3.2", features = ["serde"] }
 url.workspace = true
-serde_with = { version = "3.8.3", features = ["chrono"] }
+serde_with = { version = "3.9.0", features = ["chrono"] }
 chrono.workspace = true
 sha2 = "0.10.8"
 data-encoding = "2.6.0"
diff --git a/crates/oidc-client/Cargo.toml b/crates/oidc-client/Cargo.toml
index 58ee8b57..cae2f717 100644
--- a/crates/oidc-client/Cargo.toml
+++ b/crates/oidc-client/Cargo.toml
@@ -29,7 +29,7 @@ rand.workspace = true
 serde.workspace = true
 serde_json.workspace = true
 serde_urlencoded = "0.7.1"
-serde_with = "3.8.3"
+serde_with = "3.9.0"
 thiserror.workspace = true
 tower.workspace = true
 tracing.workspace = true