diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 2f833faf..7a6ee504 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -2025,8 +2025,9 @@ Standard ML:
   aliases:
   - sml
   extensions:
-  - .sml
+  - .ML
   - .fun
+  - .sml
 
 Stata:
   type: programming
diff --git a/lib/linguist/samples.json b/lib/linguist/samples.json
index 20c5460f..939b6403 100644
--- a/lib/linguist/samples.json
+++ b/lib/linguist/samples.json
@@ -566,6 +566,7 @@
       ".nut"
     ],
     "Standard ML": [
+      ".ML",
       ".fun",
       ".sig",
       ".sml"
@@ -733,8 +734,8 @@
       ".gemrc"
     ]
   },
-  "tokens_total": 613550,
-  "languages_total": 801,
+  "tokens_total": 613712,
+  "languages_total": 802,
   "tokens": {
     "ABAP": {
       "*/**": 1,
@@ -60840,67 +60841,67 @@
       "newplayer.MoveTo": 1
     },
     "Standard ML": {
+      "structure": 15,
+      "LazyBase": 4,
+      "LAZY_BASE": 5,
+      "struct": 13,
+      "type": 6,
+      "a": 78,
+      "exception": 2,
+      "Undefined": 6,
+      "fun": 60,
+      "delay": 6,
+      "f": 46,
+      "force": 18,
+      "(": 840,
+      ")": 845,
+      "val": 147,
+      "undefined": 2,
+      "fn": 127,
+      "raise": 6,
+      "end": 55,
+      "LazyMemoBase": 4,
+      "datatype": 29,
+      "|": 226,
+      "Done": 2,
+      "of": 91,
+      "lazy": 13,
+      "unit": 7,
+      "-": 20,
+      "let": 44,
+      "open": 9,
+      "B": 2,
+      "inject": 5,
+      "x": 74,
+      "isUndefined": 4,
+      "ignore": 3,
+      ";": 21,
+      "false": 32,
+      "handle": 4,
+      "true": 36,
+      "toString": 4,
+      "if": 51,
+      "then": 51,
+      "else": 51,
+      "eqBy": 5,
+      "p": 10,
+      "y": 50,
+      "eq": 3,
+      "op": 2,
+      "compare": 8,
+      "Ops": 3,
+      "map": 3,
+      "Lazy": 2,
+      "LazyFn": 4,
+      "LazyMemo": 2,
       "signature": 2,
-      "LAZY_BASE": 3,
       "sig": 2,
-      "type": 5,
-      "a": 74,
-      "lazy": 12,
-      "-": 19,
-      ")": 826,
-      "end": 52,
       "LAZY": 1,
       "bool": 9,
-      "val": 143,
-      "inject": 3,
-      "toString": 3,
-      "(": 822,
       "string": 14,
-      "eq": 2,
       "*": 9,
-      "eqBy": 3,
-      "compare": 7,
       "order": 2,
-      "map": 2,
       "b": 58,
-      "structure": 10,
-      "Ops": 2,
-      "LazyBase": 2,
-      "struct": 9,
-      "exception": 1,
-      "Undefined": 3,
-      "fun": 51,
-      "delay": 3,
-      "f": 37,
-      "force": 9,
-      "undefined": 1,
-      "fn": 124,
-      "raise": 5,
-      "LazyMemoBase": 2,
-      "datatype": 28,
-      "|": 225,
-      "Done": 1,
-      "of": 90,
-      "unit": 6,
-      "let": 43,
-      "open": 8,
-      "B": 1,
-      "x": 59,
-      "isUndefined": 2,
-      "ignore": 2,
-      ";": 20,
-      "false": 31,
-      "handle": 3,
-      "true": 35,
-      "if": 50,
-      "then": 50,
-      "else": 50,
-      "p": 6,
-      "y": 44,
-      "op": 1,
-      "Lazy": 1,
-      "LazyFn": 2,
-      "LazyMemo": 1,
       "functor": 2,
       "Main": 1,
       "S": 2,
@@ -66955,7 +66956,7 @@
     "SourcePawn": 2080,
     "SQL": 1485,
     "Squirrel": 130,
-    "Standard ML": 6405,
+    "Standard ML": 6567,
     "Stata": 3133,
     "Stylus": 76,
     "SuperCollider": 133,
@@ -67143,7 +67144,7 @@
     "SourcePawn": 1,
     "SQL": 5,
     "Squirrel": 1,
-    "Standard ML": 4,
+    "Standard ML": 5,
     "Stata": 7,
     "Stylus": 1,
     "SuperCollider": 1,
@@ -67172,5 +67173,5 @@
     "Zephir": 2,
     "Zimpl": 1
   },
-  "md5": "900536b7898278f2fd14fa3a8badf215"
+  "md5": "4754c31a712c5e22354851fd14d4d4fa"
 }
\ No newline at end of file
diff --git a/samples/Standard ML/Foo.ML b/samples/Standard ML/Foo.ML
new file mode 100644
index 00000000..2bbb789e
--- /dev/null
+++ b/samples/Standard ML/Foo.ML	
@@ -0,0 +1,75 @@
+
+structure LazyBase:> LAZY_BASE =
+   struct
+      type 'a lazy = unit -> 'a
+
+      exception Undefined
+
+      fun delay f = f
+
+      fun force f = f()
+
+      val undefined = fn () => raise Undefined
+   end
+
+structure LazyMemoBase:> LAZY_BASE =
+   struct 
+
+      datatype 'a susp = NotYet of unit -> 'a
+                       | Done of 'a
+
+      type 'a lazy = unit -> 'a susp ref
+
+      exception Undefined
+
+      fun delay f = 
+          let 
+             val r = ref (NotYet f)
+          in
+             fn () => r
+          end
+
+      fun force f = 
+          case f() of
+             ref (Done x) => x
+           | r as ref (NotYet f') =>
+             let
+                val a = f'()
+             in
+                r := Done a
+              ; a
+             end
+
+      val undefined = fn () => raise Undefined
+   end
+
+functor LazyFn(B: LAZY_BASE): LAZY' =
+   struct
+
+      open B
+
+      fun inject x = delay (fn () => x)
+
+      fun isUndefined x =
+          (ignore (force x)
+         ; false)
+          handle Undefined => true
+                              
+      fun toString f x = if isUndefined x then "_|_" else f (force x)
+
+      fun eqBy p (x,y) = p(force x,force y)
+      fun eq (x,y) = eqBy op= (x,y)
+      fun compare p (x,y) = p(force x,force y)
+
+      structure Ops = 
+         struct 
+            val ! = force
+            val ? = inject
+         end
+
+      fun map f x = delay (fn () => f (force x))
+
+   end
+
+structure Lazy' = LazyFn(LazyBase)
+structure LazyMemo = LazyFn(LazyMemoBase)