diff --git a/build.zig b/build.zig
index a6a04e220990ce6aad255c25df77b78a8c85450a..da93831aefd6499dbf1021cbc281f616c2143657 100644
--- a/build.zig
+++ b/build.zig
@@ -71,6 +71,7 @@ pub fn build(b: *std.Build) !void {
 
     if (flat) {
         b.installFile("LICENSE", "LICENSE");
+        b.installFile("README.md", "README.md");
     }
 
     const langref_step = b.step("langref", "Build and install the language reference");