diff --git a/Cargo.lock b/Cargo.lock
index d63773d9a94..a2a7f52eb94 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1175,7 +1175,6 @@ dependencies = [
  "glob",
  "hex",
  "libc",
- "serde",
 ]
 
 [[package]]
@@ -4386,9 +4385,9 @@ dependencies = [
 
 [[package]]
 name = "jobserver"
-version = "0.1.30"
+version = "0.1.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "685a7d121ee3f65ae4fddd72b25a04bb36b6af81bc0828f7d5434c0fe60fa3a2"
+checksum = "d2b099aaa34a9751c5bf0878add70444e1ed2dd73f347be99003d4577277de6e"
 dependencies = [
  "libc",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 296dadc1f66..be2011ba286 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -102,7 +102,9 @@ bincode = "1"
 bitvec = "1"
 byteorder = "1"
 bytes = "1"
-c-kzg = "1"
+# Turn off c-kzg's default features which include `blst/portable`. We can turn on blst's portable
+# feature ourselves when desired.
+c-kzg = { version = "1", default-features =  false }
 clap = "2"
 compare_fields_derive = { path = "common/compare_fields_derive" }
 criterion = "0.3"