diff --git a/coilsnake/assets/structures/eb.yml b/coilsnake/assets/structures/eb.yml
index 28be8488..28588fab 100644
--- a/coilsnake/assets/structures/eb.yml
+++ b/coilsnake/assets/structures/eb.yml
@@ -1678,21 +1678,21 @@
   - name: Flash vulnerability
     size: 1
     values:
-    - 100%
-    - 70%
-    - 40%
-    - 5%
+    - 99%
+    - 50%
+    - 10%
+    - 0%
   - name: Paralysis vulnerability
     size: 1
     values:
-    - 100%
+    - 99%
     - 50%
     - 10%
     - 0%
   - name: Hypnosis/Brainshock vulnerability
     size: 1
     values:
-    - 100%
+    - 99%
     - 50%
     - 10%
     - 0%
diff --git a/coilsnake/modules/eb/EnemyModule.py b/coilsnake/modules/eb/EnemyModule.py
index 0125390b..21b46c59 100644
--- a/coilsnake/modules/eb/EnemyModule.py
+++ b/coilsnake/modules/eb/EnemyModule.py
@@ -234,6 +234,27 @@ def read_from_project(self, resource_open):
     def upgrade_project(self, old_version, new_version, rom, resource_open_r, resource_open_w, resource_delete):
         if old_version == new_version:
             return
+        elif old_version == 12:
+            replace_field_in_yml(resource_name="enemy_configuration_table",
+                                 resource_open_r=resource_open_r,
+                                 resource_open_w=resource_open_w,
+                                 key="Flash vulnerability",
+                                 value_map={"100%": "99%",
+                                            "70%": "50%",
+                                            "40%": "10%",
+                                            "5%": "0%"}),
+            replace_field_in_yml(resource_name="enemy_configuration_table",
+                                 resource_open_r=resource_open_r,
+                                 resource_open_w=resource_open_w,
+                                 key="Hypnosis/Brainshock vulnerability",
+                                 value_map={"100%": "99%"}),
+            replace_field_in_yml(resource_name="enemy_configuration_table",
+                                 resource_open_r=resource_open_r,
+                                 resource_open_w=resource_open_w,
+                                 key="Paralysis vulnerability",
+                                 value_map={"100%": "99%"})
+            self.upgrade_project(
+                old_version + 1, new_version, rom, resource_open_r, resource_open_w, resource_delete)
         elif old_version == 3:
             replace_field_in_yml(resource_name="enemy_configuration_table",
                                  resource_open_r=resource_open_r,