diff --git a/ci/install-rust.sh b/ci/install-rust.sh
index d7e2be8070dc0..d7a035af21689 100644
--- a/ci/install-rust.sh
+++ b/ci/install-rust.sh
@@ -13,12 +13,12 @@ fi
 if [ "$OS" = "windows" ]; then
   : "${TARGET?The TARGET environment variable must be set.}"
   rustup set profile minimal
-  rustup update --force $toolchain-"$TARGET"
-  rustup default $toolchain-"$TARGET"
+  rustup update --force "$toolchain-$TARGET"
+  rustup default "$toolchain-$TARGET"
 else
   rustup set profile minimal
-  rustup update --force $toolchain
-  rustup default $toolchain
+  rustup update --force "$toolchain"
+  rustup default "$toolchain"
 fi
 
 if [ -n "$TARGET" ]; then
diff --git a/libc-test/semver/linux.txt b/libc-test/semver/linux.txt
index 0ac88784343df..123f8dab404e8 100644
--- a/libc-test/semver/linux.txt
+++ b/libc-test/semver/linux.txt
@@ -169,6 +169,7 @@ AT_GID
 AT_HWCAP
 AT_HWCAP2
 AT_IGNORE
+AT_MINSIGSTKSZ
 AT_NOTELF
 AT_NO_AUTOMOUNT
 AT_NULL
diff --git a/src/unix/linux_like/linux/mod.rs b/src/unix/linux_like/linux/mod.rs
index e8fb33d2c40d6..ee2999861f5c5 100644
--- a/src/unix/linux_like/linux/mod.rs
+++ b/src/unix/linux_like/linux/mod.rs
@@ -1821,6 +1821,7 @@ pub const AT_EXECFN: ::c_ulong = 31;
 // defined in arch/<arch>/include/uapi/asm/auxvec.h but has the same value
 // wherever it is defined.
 pub const AT_SYSINFO_EHDR: ::c_ulong = 33;
+pub const AT_MINSIGSTKSZ: ::c_ulong = 51;
 
 pub const GLOB_ERR: ::c_int = 1 << 0;
 pub const GLOB_MARK: ::c_int = 1 << 1;