diff --git a/Cargo.toml b/Cargo.toml
index e6560dbf7..092180596 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -41,6 +41,8 @@ arrow-select = "58.0.0"
 arrow-cast = "58.0.0"
 arrow-flight = { version = "58.0.0", features = ["flight-sql-experimental"] }
 async-trait = "0"
+# Smithy JSON 0.63 requires the pre-1.7 Document representation; allow the MSRV pin.
+aws-smithy-types = ">=1.3.6, <1.7"
 bytes = "1"
 datafusion = { version = "54.0.0", default-features = false }
 datafusion-catalog = "54.0.0"
diff --git a/rust/lancedb/Cargo.toml b/rust/lancedb/Cargo.toml
index 1557cbfa8..f9979133b 100644
--- a/rust/lancedb/Cargo.toml
+++ b/rust/lancedb/Cargo.toml
@@ -67,8 +67,7 @@ serde_json = { workspace = true }
 async-openai = { version = "0.20.0", optional = true }
 serde_with = { version = "3.8.1" }
 tempfile = { workspace = true }
-# Smithy JSON 0.63 still requires the pre-1.7 Document representation.
-aws-smithy-types = { version = ">=1.3.6, <1.7", optional = true }
+aws-smithy-types = { workspace = true, optional = true }
 aws-sdk-bedrockruntime = { version = "1.27.0", optional = true }
 # For remote feature
 reqwest = { version = "0.12.0", default-features = false, features = [
@@ -113,10 +112,7 @@ aws-sdk-s3 = { version = "1.55.0" }
 aws-sdk-kms = { version = "1.48.0" }
 aws-config = { version = "1.5.10" }
 aws-smithy-runtime = { version = "1.9.1" }
-# Constraint only: types 1.7 breaks aws-smithy-json 0.63, which aws-config still
-# requires. Bounds must stay inside 1.x and allow the MSRV job's 1.3.6 pin.
-# Drop once aws-config moves to aws-smithy-json 0.64.
-aws-smithy-types = { version = ">=1.0, <1.7" }
+aws-smithy-types.workspace = true
 datafusion.workspace = true
 http-body = "1"                                        # Matching reqwest
 rstest = "0.23.0"