diff --git a/deps/cryptol b/deps/cryptol
index 63f0ac6968..3973b15236 160000
--- a/deps/cryptol
+++ b/deps/cryptol
@@ -1 +1 @@
-Subproject commit 63f0ac6968967fb7898333778b5206083fdcb375
+Subproject commit 3973b15236ace5c11fdfabbf811d97daee7885ed
diff --git a/intTests/test_constraint_guards/Instantiated.cry b/intTests/test_constraint_guards/Instantiated.cry
new file mode 100644
index 0000000000..ac08d2ab35
--- /dev/null
+++ b/intTests/test_constraint_guards/Instantiated.cry
@@ -0,0 +1,3 @@
+module Instantiated = Parameterized where
+
+type gamma =  3
diff --git a/intTests/test_constraint_guards/Parameterized.cry b/intTests/test_constraint_guards/Parameterized.cry
new file mode 100644
index 0000000000..0cb7b8b00a
--- /dev/null
+++ b/intTests/test_constraint_guards/Parameterized.cry
@@ -0,0 +1,9 @@
+module Parameterized where
+
+parameter
+    type gamma : #
+    type constraint (fin gamma, gamma >= 2, 32 >= width gamma)
+
+// Constraint guard with type dependent on module parameter value
+v : [gamma]
+v | () => 0
diff --git a/intTests/test_constraint_guards/test.saw b/intTests/test_constraint_guards/test.saw
index e2b443bb91..138ca32ea5 100644
--- a/intTests/test_constraint_guards/test.saw
+++ b/intTests/test_constraint_guards/test.saw
@@ -16,3 +16,7 @@ fails (prove_print z3 {{ \(x : [64]) -> incomplete x }});
 prove_print z3 {{ dependent`{1} == [True] }};
 prove_print z3 {{ dependent`{3} == [False, False, False] }};
 prove_print z3 {{ dependent`{0} == [] }};
+
+// Test constraint guards dependently typed on module parameters
+import "Instantiated.cry";
+prove_print z3 {{ v == 0 }};