diff --git a/Cargo.lock b/Cargo.lock
index 70a1d5a63..e416914ad 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3692,6 +3692,26 @@ dependencies = [
  "thiserror 1.0.69",
 ]
 
+[[package]]
+name = "ref-cast"
+version = "1.0.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4a0ae411dbe946a674d89546582cea4ba2bb8defac896622d6496f14c23ba5cf"
+dependencies = [
+ "ref-cast-impl",
+]
+
+[[package]]
+name = "ref-cast-impl"
+version = "1.0.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1165225c21bff1f3bbce98f5a1f889949bc902d3575308cc7b0de30b4f6d27c7"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.101",
+]
+
 [[package]]
 name = "regex"
 version = "1.11.1"
@@ -3966,11 +3986,12 @@ dependencies = [
 
 [[package]]
 name = "schemars"
-version = "0.8.22"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fbf2ae1b8bc8e02df939598064d22402220cd5bbcca1c76f7d6a310974d5615"
+checksum = "4cd191f9397d57d581cddd31014772520aa448f65ef991055d7f61582c65165f"
 dependencies = [
  "dyn-clone",
+ "ref-cast",
  "schemars_derive",
  "serde",
  "serde_json",
@@ -3978,9 +3999,9 @@ dependencies = [
 
 [[package]]
 name = "schemars_derive"
-version = "0.8.22"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32e265784ad618884abaea0600a9adf15393368d840e0222d101a072f3f7534d"
+checksum = "5016d94c77c6d32f0b8e08b781f7dc8a90c2007d4e77472cc2807bc10a8438fe"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/export_schema/Cargo.toml b/export_schema/Cargo.toml
index 22380d234..c34b23e60 100644
--- a/export_schema/Cargo.toml
+++ b/export_schema/Cargo.toml
@@ -13,5 +13,5 @@ unexpected_cfgs = { level = "warn", check-cfg = ['cfg(test)'] }
 [dependencies]
 anyhow = "1.0.40"
 c2pa = { path = "../sdk", features = ["json_schema"], default-features = false }
-schemars = "0.8.21"
+schemars = "0.9.0"
 serde_json = "1.0.117"
diff --git a/sdk/Cargo.toml b/sdk/Cargo.toml
index f31e92ce1..b232cf688 100644
--- a/sdk/Cargo.toml
+++ b/sdk/Cargo.toml
@@ -145,7 +145,7 @@ rasn-pkix = "0.22.0"
 regex = "1.11"
 riff = "2.0.0"
 rsa = { version = "0.9.7", features = ["pem", "sha2", "std"], optional = true }
-schemars = { version = "0.8.21", optional = true }
+schemars = { version = "0.9.0", optional = true }
 serde = { version = "1.0.197", features = ["derive"] }
 serde_bytes = "0.11.14"
 serde_cbor = "0.11.1"