diff --git a/config/custom_navajo.json b/config/custom_navajo.json
index 794f45a..2d2b113 100644
--- a/config/custom_navajo.json
+++ b/config/custom_navajo.json
@@ -4,6 +4,18 @@
     "name": "5.1.0+trunk",
     "expiry": "2100-01-01"
   },
+  {
+    "url": "https://github.com/ocaml/ocaml/archive/4.14.tar.gz",
+    "name": "4.14+trunk+nnp",
+    "expiry": "2100-01-01",
+    "configure": "--disable-naked-pointers"
+  },
+  {
+    "url": "https://github.com/ocaml/ocaml/archive/4.14.tar.gz",
+    "name": "4.14+trunk+nnp+flambda",
+    "expiry": "2100-01-01",
+    "configure": "--disable-naked-pointers --enable-flambda"
+  },
   {
     "url": "https://github.com/kayceesrk/ocaml/archive/refs/heads/decouple_major_and_minor2.tar.gz",
     "name": "5.1.0+trunk+decouple_major_and_minor2",
diff --git a/config/custom_turing.json b/config/custom_turing.json
index 794f45a..2d2b113 100644
--- a/config/custom_turing.json
+++ b/config/custom_turing.json
@@ -4,6 +4,18 @@
     "name": "5.1.0+trunk",
     "expiry": "2100-01-01"
   },
+  {
+    "url": "https://github.com/ocaml/ocaml/archive/4.14.tar.gz",
+    "name": "4.14+trunk+nnp",
+    "expiry": "2100-01-01",
+    "configure": "--disable-naked-pointers"
+  },
+  {
+    "url": "https://github.com/ocaml/ocaml/archive/4.14.tar.gz",
+    "name": "4.14+trunk+nnp+flambda",
+    "expiry": "2100-01-01",
+    "configure": "--disable-naked-pointers --enable-flambda"
+  },
   {
     "url": "https://github.com/kayceesrk/ocaml/archive/refs/heads/decouple_major_and_minor2.tar.gz",
     "name": "5.1.0+trunk+decouple_major_and_minor2",