diff --git a/shared-data/deck/definitions/5/ot3_standard.json b/shared-data/deck/definitions/5/ot3_standard.json
index fe47adc0a3c..0d17047c1a0 100644
--- a/shared-data/deck/definitions/5/ot3_standard.json
+++ b/shared-data/deck/definitions/5/ot3_standard.json
@@ -760,6 +760,50 @@
           "zDimension": 0
         },
         "displayName": "Absorbance Reader Lid Dock in A4"
+      },
+      {
+        "id": "flexStackerV1D4",
+        "areaType": "flexStacker",
+        "offsetFromCutoutFixture": [163.075, 0.0, 0.65],
+        "boundingBox": {
+          "xDimension": 127.8,
+          "yDimension": 85.5,
+          "zDimension": 0
+        },
+        "displayName": "Flex Stacker in D4"
+      },
+      {
+        "id": "flexStackerV1C4",
+        "areaType": "flexStacker",
+        "offsetFromCutoutFixture": [163.075, 0.0, 0.65],
+        "boundingBox": {
+          "xDimension": 127.8,
+          "yDimension": 85.5,
+          "zDimension": 0
+        },
+        "displayName": "Flex Stacker in C4"
+      },
+      {
+        "id": "flexStackerV1B4",
+        "areaType": "flexStacker",
+        "offsetFromCutoutFixture": [163.075, 0.0, 0.65],
+        "boundingBox": {
+          "xDimension": 127.8,
+          "yDimension": 85.5,
+          "zDimension": 0
+        },
+        "displayName": "Flex Stacker in B4"
+      },
+      {
+        "id": "flexStackerV1A4",
+        "areaType": "flexStacker",
+        "offsetFromCutoutFixture": [163.075, 0.0, 0.65],
+        "boundingBox": {
+          "xDimension": 127.8,
+          "yDimension": 85.5,
+          "zDimension": 0
+        },
+        "displayName": "Flex Stacker in A4"
       }
     ],
     "cutouts": [
@@ -1125,6 +1169,20 @@
       },
       "fixtureGroup": {},
       "height": 10.65
+    },
+    {
+      "id": "flexStackerV1",
+      "expectOpentronsModuleSerialNumber": true,
+      "mayMountTo": ["cutoutD3", "cutoutC3", "cutoutB3", "cutoutA3"],
+      "displayName": "Slot With a Flex Stacker",
+      "providesAddressableAreas": {
+        "cutoutD3": ["D3", "flexStackerV1D4"],
+        "cutoutC3": ["C3", "flexStackerV1C4"],
+        "cutoutB3": ["B3", "flexStackerV1B4"],
+        "cutoutA3": ["A3", "flexStackerV1A4"]
+      },
+      "fixtureGroup": {},
+      "height": 10.65
     }
   ],
   "gripperOffsets": {
diff --git a/shared-data/deck/schemas/5.json b/shared-data/deck/schemas/5.json
index 54e2f74b9bc..1db1a2de74f 100644
--- a/shared-data/deck/schemas/5.json
+++ b/shared-data/deck/schemas/5.json
@@ -142,7 +142,13 @@
                   "movableTrash",
                   "fixedTrash",
                   "wasteChute",
-                  "lidDock"
+                  "lidDock",
+                  "heaterShaker",
+                  "magneticBlock",
+                  "temperatureModule",
+                  "thermocycler",
+                  "absorbanceReader",
+                  "flexStacker"
                 ]
               },
               "offsetFromCutoutFixture": {
diff --git a/shared-data/deck/types/schemaV5.ts b/shared-data/deck/types/schemaV5.ts
index acd11fbb8be..8a9d5500a8d 100644
--- a/shared-data/deck/types/schemaV5.ts
+++ b/shared-data/deck/types/schemaV5.ts
@@ -64,6 +64,10 @@ export type FlexAddressableAreaName =
   | 'absorbanceReaderV1LidDockB4'
   | 'absorbanceReaderV1LidDockC4'
   | 'absorbanceReaderV1LidDockD4'
+  | 'flexStackerV1A4'
+  | 'flexStackerV1B4'
+  | 'flexStackerV1C4'
+  | 'flexStackerV1D4'
 
 export type OT2AddressableAreaName =
   | '1'
@@ -135,6 +139,7 @@ export type FlexModuleCutoutFixtureId =
   | 'thermocyclerModuleV2Rear'
   | 'thermocyclerModuleV2Front'
   | 'absorbanceReaderV1'
+  | 'flexStackerV1'
 
 export type OT2SingleStandardSlot = 'singleStandardSlot'