diff --git a/install.sh b/install.sh
index 288ef02..3e688a3 100644
--- a/install.sh
+++ b/install.sh
@@ -4,9 +4,13 @@
 # AGENT_HUB_SETUP_ARGS, when set, is added to the setup's arguments, e.g. --no-start.
 agent_hub_install() {
     if [ "$(uname -s)" != Linux ] || [ "$(uname -m)" != x86_64 ]; then
-        echo 'This line installs Agent Hub on Linux (x86_64). On Windows, run the page'\''s PowerShell line.' >&2
+        echo 'This line installs Agent Hub on Linux (x86_64). On Windows, run the PowerShell line instead.' >&2
         return 1
     fi
+    glibc=$(getconf GNU_LIBC_VERSION 2>/dev/null) || glibc=
+    case "${glibc#glibc }" in
+    2.[0-9]|2.[12][0-9]|2.3[0-4]) echo "Agent Hub needs glibc 2.35 or newer; this system has ${glibc#glibc }." >&2; return 1 ;;
+    esac
     command -v curl >/dev/null 2>&1 || { echo 'Installing Agent Hub needs curl.' >&2; return 1; }
     dir=$(mktemp -d) || return 1
     exe="$dir/agent-hub-setup-linux"