diff --git a/prometheus-lua b/prometheus-lua
index 5129993..3554f63 100755
--- a/prometheus-lua
+++ b/prometheus-lua
@@ -1,7 +1,15 @@
 #!/usr/bin/env sh
 set -eu
 
-SCRIPT_DIR=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
+SCRIPT_PATH="$0"
+while [ -L "$SCRIPT_PATH" ]; do
+  LINK_TARGET="$(readlink "$SCRIPT_PATH")"
+  case "$LINK_TARGET" in
+    /*) SCRIPT_PATH="$LINK_TARGET" ;;
+    *) SCRIPT_PATH="$(dirname "$SCRIPT_PATH")/$LINK_TARGET" ;;
+  esac
+done
+SCRIPT_DIR=$(CDPATH= cd -- "$(dirname -- "$SCRIPT_PATH")" && pwd)
 BUNDLED_LUA="$SCRIPT_DIR/runtime/lua"
 
 : "${PROMETHEUS_LUA_VERSION:=dev}"