diff --git a/crates/f3dx-http/Cargo.toml b/crates/f3dx-http/Cargo.toml
index 3d25f7c..0f56808 100644
--- a/crates/f3dx-http/Cargo.toml
+++ b/crates/f3dx-http/Cargo.toml
@@ -22,7 +22,7 @@ eventsource-stream = "0.2"
 thiserror = "2.0"
 f3dx-trace = { path = "../f3dx-trace" }
 opentelemetry = { version = "0.27", features = ["trace"] }
-opentelemetry_sdk = { version = "0.27", features = ["trace"] }
+opentelemetry_sdk = { version = "0.31", features = ["trace"] }
 # Phase E V0.2: terminal-time schema validation. Streaming-incremental schema
 # walk lands as V0.2.1 once the streaming JSON parser side is plumbed.
 jsonschema = { version = "0.27", default-features = false }
diff --git a/crates/f3dx-trace/Cargo.toml b/crates/f3dx-trace/Cargo.toml
index 4e6cbdd..050ae1b 100644
--- a/crates/f3dx-trace/Cargo.toml
+++ b/crates/f3dx-trace/Cargo.toml
@@ -15,7 +15,7 @@ pyo3 = { workspace = true }
 serde = { workspace = true }
 serde_json = { workspace = true }
 opentelemetry = { version = "0.27", features = ["trace"] }
-opentelemetry_sdk = { version = "0.27", features = ["trace", "rt-tokio"] }
+opentelemetry_sdk = { version = "0.31", features = ["trace", "rt-tokio"] }
 opentelemetry-otlp = { version = "0.27", default-features = false, features = ["trace", "http-proto", "reqwest-blocking-client", "reqwest-rustls"] }
 opentelemetry-stdout = { version = "0.27", features = ["trace"] }
 once_cell = "1.20"