diff --git a/shared-data/deck/definitions/6/ot3_standard.json b/shared-data/deck/definitions/6/ot3_standard.json
index 337355c5386..a81db41dc13 100644
--- a/shared-data/deck/definitions/6/ot3_standard.json
+++ b/shared-data/deck/definitions/6/ot3_standard.json
@@ -1142,6 +1142,50 @@
           "zDimension": 0
         },
         "displayName": "Absorbance Reader Lid Dock in A4"
+      },
+      {
+        "id": "flexStackerV1D4",
+        "areaType": "flexStacker",
+        "offsetFromCutoutFixture": [161.0, 0.0, 31.0],
+        "boundingBox": {
+          "xDimension": 128.0,
+          "yDimension": 86.0,
+          "zDimension": 0
+        },
+        "displayName": "Flex Stacker in D4"
+      },
+      {
+        "id": "flexStackerV1C4",
+        "areaType": "flexStacker",
+        "offsetFromCutoutFixture": [161.0, 0.0, 31.0],
+        "boundingBox": {
+          "xDimension": 128.0,
+          "yDimension": 86.0,
+          "zDimension": 0
+        },
+        "displayName": "Flex Stacker in C4"
+      },
+      {
+        "id": "flexStackerV1B4",
+        "areaType": "flexStacker",
+        "offsetFromCutoutFixture": [161.0, 0.0, 31.0],
+        "boundingBox": {
+          "xDimension": 128.0,
+          "yDimension": 86.0,
+          "zDimension": 0
+        },
+        "displayName": "Flex Stacker in B4"
+      },
+      {
+        "id": "flexStackerV1A4",
+        "areaType": "flexStacker",
+        "offsetFromCutoutFixture": [161.0, 0.0, 31.0],
+        "boundingBox": {
+          "xDimension": 128.0,
+          "yDimension": 86.0,
+          "zDimension": 0
+        },
+        "displayName": "Flex Stacker in A4"
       }
     ],
     "cutouts": [
@@ -1355,6 +1399,34 @@
       "fixtureGroup": {},
       "height": 124.5
     },
+    {
+      "id": "flexStackerV1WithWasteChuteRightAdapterCovered",
+      "expectOpentronsModuleSerialNumber": true,
+      "mayMountTo": ["cutoutD3"],
+      "displayName": "Flex Stacker With Waste Chute Adapter for 96 Channel Pipette or Gripper",
+      "providesAddressableAreas": {
+        "cutoutD3": ["1ChannelWasteChute", "8ChannelWasteChute", "D4"]
+      },
+      "fixtureGroup": {},
+      "height": 124.5
+    },
+    {
+      "id": "flexStackerV1WithWasteChuteRightAdapterNoCover",
+      "expectOpentronsModuleSerialNumber": true,
+      "mayMountTo": ["cutoutD3"],
+      "displayName": "Flex Stacker With Waste Chute Adapter",
+      "providesAddressableAreas": {
+        "cutoutD3": [
+          "1ChannelWasteChute",
+          "8ChannelWasteChute",
+          "96ChannelWasteChute",
+          "gripperWasteChute",
+          "flexStackerV1D4"
+        ]
+      },
+      "fixtureGroup": {},
+      "height": 124.5
+    },
     {
       "id": "thermocyclerModuleV2Rear",
       "expectOpentronsModuleSerialNumber": true,
@@ -1507,6 +1579,20 @@
       },
       "fixtureGroup": {},
       "height": 10.65
+    },
+    {
+      "id": "flexStackerV1",
+      "expectOpentronsModuleSerialNumber": true,
+      "mayMountTo": ["cutoutD3", "cutoutC3", "cutoutB3", "cutoutA3"],
+      "displayName": "Slot With a Flex Stacker",
+      "providesAddressableAreas": {
+        "cutoutD3": ["flexStackerV1D4", "D3"],
+        "cutoutC3": ["flexStackerV1C4", "C3"],
+        "cutoutB3": ["flexStackerV1B4", "B3"],
+        "cutoutA3": ["flexStackerV1A4", "A3"]
+      },
+      "fixtureGroup": {},
+      "height": 10.65
     }
   ],
   "gripperOffsets": {
diff --git a/shared-data/deck/schemas/6.json b/shared-data/deck/schemas/6.json
index 6e548180ead..9f013aa3bda 100644
--- a/shared-data/deck/schemas/6.json
+++ b/shared-data/deck/schemas/6.json
@@ -151,7 +151,8 @@
                   "temperatureModule",
                   "magneticBlock",
                   "thermocycler",
-                  "heaterShaker"
+                  "heaterShaker",
+                  "flexStacker"
                 ]
               },
               "offsetFromCutoutFixture": {