diff --git a/build_sysroot/Cargo.lock b/build_sysroot/Cargo.lock
index 53d5364b..b4f5db53 100644
--- a/build_sysroot/Cargo.lock
+++ b/build_sysroot/Cargo.lock
@@ -41,9 +41,9 @@ dependencies = [
 
 [[package]]
 name = "autocfg"
-version = "0.1.7"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d49d90015b3c36167a20fe2810c5cd875ad504b39cff3d4eae7977e6b7c1cb2"
+checksum = "f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d"
 
 [[package]]
 name = "cc"
@@ -119,9 +119,9 @@ dependencies = [
 
 [[package]]
 name = "hashbrown"
-version = "0.6.3"
+version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e6073d0ca812575946eb5f35ff68dbe519907b25c42530389ff946dc84c6ead"
+checksum = "e91b62f79061a0bc2e046024cb7ba44b08419ed238ecbd9adbd787434b9e8c25"
 dependencies = [
  "autocfg",
  "compiler_builtins",
diff --git a/rust-toolchain b/rust-toolchain
index d16b27f6..c3d07709 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-nightly-2020-08-05
+nightly-2020-08-08