diff --git a/build/janet/janetconf.h b/build/janet/janetconf.h
index 647530125..6e0dee55b 100644
--- a/build/janet/janetconf.h
+++ b/build/janet/janetconf.h
@@ -4,10 +4,10 @@
 #define JANETCONF_H
 
 #define JANET_VERSION_MAJOR 1
-#define JANET_VERSION_MINOR 29
-#define JANET_VERSION_PATCH 1
+#define JANET_VERSION_MINOR 31
+#define JANET_VERSION_PATCH 0
 #define JANET_VERSION_EXTRA ""
-#define JANET_VERSION "1.29.1"
+#define JANET_VERSION "1.31.0"
 
 /* #define JANET_BUILD "local" */
 
diff --git a/vendor/janet b/vendor/janet
index 3a4d56afc..169bd812c 160000
--- a/vendor/janet
+++ b/vendor/janet
@@ -1 +1 @@
-Subproject commit 3a4d56afca2eee0e4dbca9a6400757d198e6d6f3
+Subproject commit 169bd812c9183865b2399a8eaeab6aad238856c5