diff --git a/Cargo.lock b/Cargo.lock
index 6af7fa89b..80fd1e3cd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -360,7 +360,7 @@ version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
 dependencies = [
- "hermit-abi",
+ "hermit-abi 0.1.19",
  "libc",
  "winapi 0.3.9",
 ]
@@ -1063,6 +1063,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "hermit-abi"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee512640fe35acbfb4bb779db6f0d80704c2cacfa2e39b601ef3e3f47d1ae4c7"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "hmac"
 version = "0.12.1"
@@ -1412,11 +1421,11 @@ dependencies = [
 
 [[package]]
 name = "num_cpus"
-version = "1.13.1"
+version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "19e64526ebdee182341572e50e9ad03965aa510cd94427a4549448f285e957a1"
+checksum = "0fac9e2da13b5eb447a6ce3d392f23a29d8694bff781bf03a16cd9ac8697593b"
 dependencies = [
- "hermit-abi",
+ "hermit-abi 0.2.6",
  "libc",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index 6c717589c..443fc6a30 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,7 +24,7 @@ docopt = "1"
 env_logger = "0.9"
 itertools = "0.10"
 log = "0.4"
-num_cpus = "1.13"
+num_cpus = "1.15"
 openssl = "0.10.50"
 postgis = "0.9.0"
 postgres = { version = "0.19.1", features = ["with-time-0_2", "with-uuid-0_8", "with-serde_json-1"] }