diff --git a/lib/std/crypto/argon2.zig b/lib/std/crypto/argon2.zig
index 69cd0b87ef8f94f3ac76621cde502596a6ebdd91..e36f6549513d5d6c737600965c69cb7a968c6f93 100644
--- a/lib/std/crypto/argon2.zig
+++ b/lib/std/crypto/argon2.zig
@@ -941,6 +941,8 @@ test "password hash and password verify" {
 }
 
 test "kdf derived key length" {
+    if (true) return error.SkipZigTest; // https://codeberg.org/ziglang/zig/issues/31504
+
     const allocator = std.testing.allocator;
     const io = std.testing.io;