diff --git a/custom_mutators/grammar_mutator/GRAMMAR_VERSION b/custom_mutators/grammar_mutator/GRAMMAR_VERSION
index 4743e7c2..93f9321c 100644
--- a/custom_mutators/grammar_mutator/GRAMMAR_VERSION
+++ b/custom_mutators/grammar_mutator/GRAMMAR_VERSION
@@ -1 +1 @@
-6ca490c
+cbe5e32
diff --git a/custom_mutators/grammar_mutator/grammar_mutator b/custom_mutators/grammar_mutator/grammar_mutator
index 6ca490c6..cbe5e327 160000
--- a/custom_mutators/grammar_mutator/grammar_mutator
+++ b/custom_mutators/grammar_mutator/grammar_mutator
@@ -1 +1 @@
-Subproject commit 6ca490c66b949db20d8c861ebc8fb2e6ca725ead
+Subproject commit cbe5e32752773945e0142fac9f1b7a0ccb5dcdff