diff --git a/include/osdetection b/include/osdetection
index dc53f51f..0ea1d8bb 100644
--- a/include/osdetection
+++ b/include/osdetection
@@ -52,6 +52,7 @@
                     10.10 | 10.10.[0-9]*) OS_FULLNAME="Mac OS X 10.10 (Yosemite)" ;;
                     10.11 | 10.11.[0-9]*) OS_FULLNAME="Mac OS X 10.11 (El Capitan)" ;;
                     10.12 | 10.12.[0-9]*) OS_FULLNAME="macOS Sierra (${OS_VERSION})" ;;
+                    10.13 | 10.13.[0-9]*) OS_FULLNAME="macOS High Sierra (${OS_VERSION})" ;;
                     *) echo "Unknown macOS version. Do you know what version it is? Create an issue at ${PROGRAM_SOURCE}" ;;
                 esac
             else