diff --git a/Cargo.lock b/Cargo.lock
index f71bef82a..4fff87893 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2003,9 +2003,9 @@ dependencies = [
 
 [[package]]
 name = "fraction"
-version = "0.16.0"
+version = "0.17.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "33fee0259ffdc3d7bd64438b6b08437884d4df5700f9cb8a23b079c3958ae578"
+checksum = "e246562084dde8ebbcc943b261c406ce4f68e5032ec28029a251a47d6a295500"
 dependencies = [
  "num",
  "num-bigint",
@@ -2740,9 +2740,9 @@ dependencies = [
 
 [[package]]
 name = "jsonschema"
-version = "0.50.1"
+version = "0.53.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "29b6bb4e22283b09119c671e57ac6a185e9a0c70c31585e56b729b626d877753"
+checksum = "ca2ea2207f8ccb34b6d4d041fe9deb08fff3cbc43750012caa2c3d1e860188e4"
 dependencies = [
  "ahash",
  "bytecount",
@@ -2751,7 +2751,6 @@ dependencies = [
  "fancy-regex 0.19.0",
  "fraction",
  "getrandom 0.3.4",
- "idna",
  "itoa",
  "jsonschema-regex",
  "jsonschema-value",
@@ -2769,25 +2768,27 @@ dependencies = [
 
 [[package]]
 name = "jsonschema-regex"
-version = "0.50.1"
+version = "0.53.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "497fbf3b1ca53b1e23a253f636e88e7a2031387388b8140199a0f240fcadf647"
+checksum = "5426a01d944d044c9c5e459f603419d1b539358f5496b1041df45a7a86d2d38f"
 dependencies = [
  "regex-syntax",
 ]
 
 [[package]]
 name = "jsonschema-value"
-version = "0.50.1"
+version = "0.53.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b84ca3f39446973a810fc90fc2645ada8c24284f6deb009c78b776813973887d"
+checksum = "65b6ec7deaeaab6320efc3084d8a9e91d5b4985ee36ffffef45dbff9516ff7a8"
 dependencies = [
  "ahash",
  "bytecount",
  "fraction",
+ "getrandom 0.3.4",
  "num-cmp",
  "num-traits",
  "serde_json",
+ "zmij",
 ]
 
 [[package]]
@@ -4178,9 +4179,9 @@ dependencies = [
 
 [[package]]
 name = "referencing"
-version = "0.50.1"
+version = "0.53.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7a0a32a2a2c2d7dd0ee54705b5fd641be73037271928f68e9b0e7205b71c9d30"
+checksum = "fb406ba984c08d1b91781d7507d103296cf6dec3256c33c388b468957f4b43bb"
 dependencies = [
  "ahash",
  "fluent-uri",
diff --git a/Cargo.toml b/Cargo.toml
index ead725761..a6eaa17d5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -49,7 +49,7 @@ serde_yaml = "0.9"
 # MCP tool arguments are validated against the exact discovered schema before
 # dispatch. Disable network/file schema retrieval: untrusted remote references
 # fail closed instead of turning validation into ambient I/O.
-jsonschema = { version = "0.50.1", default-features = false }
+jsonschema = { version = "0.53.0", default-features = false }
 
 # Configuration
 # Disable the `ini` feature (default-on in config 0.15) — we only consume