diff --git a/Cargo.lock b/Cargo.lock
index 77732791..44f8adcd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -5634,6 +5634,26 @@ dependencies = [
  "thiserror 2.0.20",
 ]
 
+[[package]]
+name = "ref-cast"
+version = "1.0.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7e440fb4e4b4147295338efb76001ab9e4efc0e5839df2c47fc5ac2381d365c3"
+dependencies = [
+ "ref-cast-impl",
+]
+
+[[package]]
+name = "ref-cast-impl"
+version = "1.0.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "92ecd8964f8453721699a1ed72037b0db49ce2f5a5138486ee89bed6f67cdf3a"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 3.0.4",
+]
+
 [[package]]
 name = "regalloc2"
 version = "0.15.2"
@@ -5908,11 +5928,12 @@ dependencies = [
 
 [[package]]
 name = "schemars"
-version = "0.8.22"
+version = "1.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fbf2ae1b8bc8e02df939598064d22402220cd5bbcca1c76f7d6a310974d5615"
+checksum = "687274d293b6cdc6e73e0fee520bf2049650090d7164f87672d212a3c530cf4a"
 dependencies = [
  "dyn-clone",
+ "ref-cast",
  "schemars_derive",
  "serde",
  "serde_json",
@@ -5920,14 +5941,14 @@ dependencies = [
 
 [[package]]
 name = "schemars_derive"
-version = "0.8.22"
+version = "1.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32e265784ad618884abaea0600a9adf15393368d840e0222d101a072f3f7534d"
+checksum = "d98c67716b46af2f0b8cf752abc930f6f9aecfbf671ecfb531db8a31dbe4e2ba"
 dependencies = [
  "proc-macro2",
  "quote",
  "serde_derive_internals",
- "syn 2.0.119",
+ "syn 3.0.4",
 ]
 
 [[package]]
@@ -6078,13 +6099,13 @@ dependencies = [
 
 [[package]]
 name = "serde_derive_internals"
-version = "0.29.1"
+version = "0.30.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "18d26a20a969b9e3fdf2fc2d9f21eda6c40e2de84c9408bb5d3b05d499aae711"
+checksum = "f852137cce035d6a4df67ccce505ff6b3e9fd3a10e3e52b24dc71e650bb1a9bd"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.119",
+ "syn 3.0.4",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 25993308..6d88103f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -288,7 +288,7 @@ starlark = "0.13"
 
 # CLI - MCP
 rmcp = { version = "0.13", default-features = false }
-schemars = "0.8"
+schemars = "1.2"
 
 # CLI - Utilities
 time = { version = "0.3", features = ["formatting", "parsing", "local-offset", "macros"] }