diff --git a/build.sh b/build.sh
index f887e8d..093e124 100755
--- a/build.sh
+++ b/build.sh
@@ -46,5 +46,8 @@ then
     exit 0
 fi
 
+version="$(git describe --tags --abbrev=7)"
+version="${version%-*}:${version##*-}"
+sed -i "s|VERSION :: .*|VERSION :: \"${version}\"|g" src/main.odin
 
 odin build src/ -show-timings -collection:src=src -out:ols -microarch:native -no-bounds-check -o:speed $@
diff --git a/src/main.odin b/src/main.odin
index 6e91583..26cf701 100644
--- a/src/main.odin
+++ b/src/main.odin
@@ -19,6 +19,7 @@ import "core:sys/windows"
 import "src:common"
 import "src:server"
 
+VERSION :: "dev-2024-11-9:g584f01b"
 
 os_read :: proc(handle: rawptr, data: []byte) -> (int, int) {
 	ptr := cast(^os.Handle)handle
@@ -101,6 +102,10 @@ end :: proc() {
 }
 
 main :: proc() {
+	if len(os.args) > 1 && os.args[1] == "version" {
+		fmt.println("ols version", VERSION)
+		os.exit(0)
+	}
 	reader := server.make_reader(os_read, cast(rawptr)&os.stdin)
 	writer := server.make_writer(os_write, cast(rawptr)&os.stdout)