diff --git a/Cargo.toml b/Cargo.toml
index 1a02830b0b9f..55f5e25ddbb4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -82,6 +82,8 @@ include = [
     "NOTICE.txt",
 ]
 edition = "2024"
+# When this changes, please update rust-toolchain.toml to
+# ensure that CI uses the appropriate minimum version
 rust-version = "1.85"
 
 [workspace.dependencies]
diff --git a/arrow-cast/Cargo.toml b/arrow-cast/Cargo.toml
index 81649353d182..880f7796fcf8 100644
--- a/arrow-cast/Cargo.toml
+++ b/arrow-cast/Cargo.toml
@@ -51,7 +51,7 @@ half = { version = "2.1", default-features = false }
 num-traits = { version = "0.2.19", default-features = false, features = ["std"] }
 lexical-core = { version = "1.0", default-features = false, features = ["write-integers", "write-floats", "parse-integers", "parse-floats"] }
 atoi = "2.0.0"
-comfy-table = { version = "7", optional = true, default-features = false }
+comfy-table = { version = "7.2.1", optional = true, default-features = false }
 base64 = "0.22"
 ryu = "1.0.16"
 
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 6d6e1bfb100f..50d0c5036f98 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -16,5 +16,5 @@
 # under the License.
 
 [toolchain]
-channel = "1.91"
+channel = "1.85"
 components = ["rustfmt", "clippy"]