diff --git a/.github/workflows/bors.yml b/.github/workflows/bors.yml
index 0b85a7f70bf0c..5132f25ef7f4f 100644
--- a/.github/workflows/bors.yml
+++ b/.github/workflows/bors.yml
@@ -258,7 +258,7 @@ jobs:
       - uses: actions/checkout@v2
       - name: Setup Rust toolchain
         # Should update the semverver revision in semver.sh if we touch nightly ver.
-        run: TOOLCHAIN=nightly-2021-07-23 sh ./ci/install-rust.sh
+        run: TOOLCHAIN=nightly-2021-09-30 sh ./ci/install-rust.sh
       - name: Check breaking changes
         run: sh ci/semver.sh linux
 
@@ -270,7 +270,7 @@ jobs:
       - uses: actions/checkout@v2
       - name: Setup Rust toolchain
         # Pin nightly version to make semverver compilable.
-        run: TOOLCHAIN=nightly-2021-07-23 sh ./ci/install-rust.sh
+        run: TOOLCHAIN=nightly-2021-09-30 sh ./ci/install-rust.sh
       - name: Check breaking changes
         run: sh ci/semver.sh macos
 
diff --git a/ci/semver.sh b/ci/semver.sh
index 318e8244ce65b..bdd68f59867c0 100644
--- a/ci/semver.sh
+++ b/ci/semver.sh
@@ -16,7 +16,7 @@ fi
 rustup component add rustc-dev llvm-tools-preview
 
 # Should update the nightly version in bors CI config if we touch this.
-cargo install semverver --version=0.1.47
+cargo install semverver --version=0.1.48
 
 TARGETS=
 case "${OS}" in