diff --git a/build.zig b/build.zig
index e27f1eda954c7ad4c518a0404244b5e3540e7cc9..4e19d47c7fadf182d5b0a7b97b3358ea99467c50 100644
--- a/build.zig
+++ b/build.zig
@@ -222,7 +222,7 @@ pub fn build(b: *Builder) !void {
 
         switch (mem.count(u8, git_describe, "-")) {
             0 => {
-                // Tagged release version (e.g. 0.8.0).
+                // Tagged release version (e.g. 0.9.0).
                 if (!mem.eql(u8, git_describe, version_string)) {
                     std.debug.print("Zig version '{s}' does not match Git tag '{s}'\n", .{ version_string, git_describe });
                     std.process.exit(1);
@@ -230,7 +230,7 @@ pub fn build(b: *Builder) !void {
                 break :v version_string;
             },
             2 => {
-                // Untagged development build (e.g. 0.8.0-684-gbbe2cca1a).
+                // Untagged development build (e.g. 0.9.0-dev.2025+ecf0050a9).
                 var it = mem.split(u8, git_describe, "-");
                 const tagged_ancestor = it.next() orelse unreachable;
                 const commit_height = it.next() orelse unreachable;
diff --git a/doc/langref.html.in b/doc/langref.html.in
index 90018cab30464c8468519e7ea8646a50d54652de..926b053ca05a1283f85d51594ab6f01df631189f 100644
--- a/doc/langref.html.in
+++ b/doc/langref.html.in
@@ -316,6 +316,7 @@
           <a href="https://ziglang.org/documentation/0.6.0/">0.6.0</a> |
           <a href="https://ziglang.org/documentation/0.7.1/">0.7.1</a> |
           <a href="https://ziglang.org/documentation/0.8.1/">0.8.1</a> |
+          <a href="https://ziglang.org/documentation/0.9.0/">0.9.0</a> |
           master
         </nav>
         <nav aria-labelledby="table-of-contents">