diff --git a/Cargo.lock b/Cargo.lock
index fa2a2b891ba3..ce2b912a9bb7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -780,9 +780,9 @@ checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
 [[package]]
 name = "pkg-config"
-version = "0.3.30"
+version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d231b230927b5e4ad203db57bbcbee2802f6bce620b1e4a9024a07d94e2907ec"
+checksum = "953ec861398dccce10c670dfeaf3ec4911ca479e9c02154b3a215178c5f566f2"
 
 [[package]]
 name = "plotters"
diff --git a/graphene/sys/Cargo.toml b/graphene/sys/Cargo.toml
index e2ad9e7a5b4d..b0b444ad9245 100644
--- a/graphene/sys/Cargo.toml
+++ b/graphene/sys/Cargo.toml
@@ -1,5 +1,5 @@
 [build-dependencies]
-pkg-config = "0.3.29"
+pkg-config = "0.3.31"
 system-deps = "7"
 
 [dependencies]