diff --git a/dataclasses.krk b/dataclasses.krk
new file mode 100644
index 0000000..52d57b6
--- /dev/null
+++ b/dataclasses.krk
@@ -0,0 +1,24 @@
+let KW_ONLY = object()
+
+def _do_the_thing(cls, init, eq):
+    # Ordered dicts make this awesome
+    print(cls.__annotations__)
+    return cls
+
+def dataclass(cls=None, /, *, init=True, eq=True):
+    def _wrap(cls):
+        return _do_the_thing(cls,init,eq)
+    if cls is None:
+        return _wrap
+    return _wrap(cls)
+
+@dataclass
+class Foo:
+    foo: int
+    bar: str
+    baz: str
+    qux: bool
+    def some_method(self):
+        pass
+
+
diff --git a/src/sys.c b/src/sys.c
index ad61566..d8d4d05 100644
--- a/src/sys.c
+++ b/src/sys.c
@@ -7,9 +7,9 @@
 #define KRK_VERSION_MINOR  5
 #define KRK_VERSION_PATCH  0
 #define KRK_VERSION_LEVEL  0xa
-#define KRK_VERSION_SERIAL 0x0
+#define KRK_VERSION_SERIAL 0x1
 
-#define KRK_VERSION_EXTRA_BASE  "a0"
+#define KRK_VERSION_EXTRA_BASE  "a1"
 
 #ifndef KRK_STATIC_ONLY
 #define KRK_VERSION_EXTRA KRK_VERSION_EXTRA_BASE
diff --git a/timeparse.krk b/timeparse.krk
new file mode 100644
index 0000000..3e84bba
--- /dev/null
+++ b/timeparse.krk
@@ -0,0 +1,4 @@
+for i in range(100):
+    for j in range(20):
+        for k in range(-20,20):
+            float(f'{i}.{j}e{k}')