diff --git a/data/irregular/users/2024-09-21.json b/data/irregular/users/2024-09-21.json
new file mode 100644
index 00000000..29e88987
--- /dev/null
+++ b/data/irregular/users/2024-09-21.json
@@ -0,0 +1,57 @@
+{
+  "objective": "knapsack",
+  "parameters": {
+    "item_bin_minimum_spacing": 0.0,
+    "item_item_minimum_spacing": 0.0
+  },
+  "bin_types": [
+    {
+      "copies": 1,
+      "width": 50.0,
+      "height": 50.0,
+      "type": "rectangle"
+    },
+    {
+      "copies": 1,
+      "width": 200.0,
+      "height": 200.0,
+      "type": "rectangle"
+    }
+  ],
+  "item_types": [
+    {
+      "copies": 1,
+      "shapes": [
+        {
+          "type": "polygon",
+          "vertices": [
+            {
+              "x": 100.0,
+              "y": 100.0
+            },
+            {
+              "x": 0.0,
+              "y": 100.0
+            },
+            {
+              "x": 0.0,
+              "y": 0.0
+            },
+            {
+              "x": 100.0,
+              "y": 0.0
+            }
+          ],
+          "holes": []
+        }
+      ],
+      "allowed_rotations": [
+        {
+          "start": 0,
+          "end": 0
+        }
+      ],
+      "allow_mirroring": false
+    }
+  ]
+}
diff --git a/data/irregular/users/2024-09-21_solution.json b/data/irregular/users/2024-09-21_solution.json
new file mode 100644
index 00000000..ee5e4966
--- /dev/null
+++ b/data/irregular/users/2024-09-21_solution.json
@@ -0,0 +1,81 @@
+{
+    "bins": [
+        {
+            "copies": 1,
+            "id": 1,
+            "items": [
+                {
+                    "angle": 0.0,
+                    "id": 0,
+                    "item_shapes": [
+                        {
+                            "shape": [
+                                {
+                                    "type": "LineSegment",
+                                    "xe": 0.0,
+                                    "xs": 100.0,
+                                    "ye": 100.0,
+                                    "ys": 100.0
+                                },
+                                {
+                                    "type": "LineSegment",
+                                    "xe": 0.0,
+                                    "xs": 0.0,
+                                    "ye": 0.0,
+                                    "ys": 100.0
+                                },
+                                {
+                                    "type": "LineSegment",
+                                    "xe": 100.0,
+                                    "xs": 0.0,
+                                    "ye": 0.0,
+                                    "ys": 0.0
+                                },
+                                {
+                                    "type": "LineSegment",
+                                    "xe": 100.0,
+                                    "xs": 100.0,
+                                    "ye": 100.0,
+                                    "ys": 0.0
+                                }
+                            ]
+                        }
+                    ],
+                    "mirror": false,
+                    "x": 0.0,
+                    "y": 0.0
+                }
+            ],
+            "shape": [
+                {
+                    "type": "LineSegment",
+                    "xe": 200.0,
+                    "xs": 0.0,
+                    "ye": 0.0,
+                    "ys": 0.0
+                },
+                {
+                    "type": "LineSegment",
+                    "xe": 200.0,
+                    "xs": 200.0,
+                    "ye": 200.0,
+                    "ys": 0.0
+                },
+                {
+                    "type": "LineSegment",
+                    "xe": 0.0,
+                    "xs": 200.0,
+                    "ye": 200.0,
+                    "ys": 200.0
+                },
+                {
+                    "type": "LineSegment",
+                    "xe": 0.0,
+                    "xs": 0.0,
+                    "ye": 0.0,
+                    "ys": 200.0
+                }
+            ]
+        }
+    ]
+}
diff --git a/extern/CMakeLists.txt b/extern/CMakeLists.txt
index 0c63533a..f2b7ea90 100644
--- a/extern/CMakeLists.txt
+++ b/extern/CMakeLists.txt
@@ -53,7 +53,7 @@ set(COLUMNGENERATIONSOLVER_USE_CLP ON)
 FetchContent_Declare(
     columngenerationsolver
     GIT_REPOSITORY https://github.com/fontanf/columngenerationsolver.git
-    GIT_TAG 8f9ac25f724ffe13d239728974752567afd2a586
+    GIT_TAG 84c6642d53203259c356d4186b3a0919578b8634
     #SOURCE_DIR "${PROJECT_SOURCE_DIR}/../columngenerationsolver/"
     EXCLUDE_FROM_ALL)
 FetchContent_MakeAvailable(columngenerationsolver)
diff --git a/src/algorithms/column_generation.hpp b/src/algorithms/column_generation.hpp
index 6912fc1d..f86e086c 100644
--- a/src/algorithms/column_generation.hpp
+++ b/src/algorithms/column_generation.hpp
@@ -86,7 +86,7 @@ class ColumnGenerationPricingSolver: public columngenerationsolver::PricingSolve
 
     std::vector<BinPos> fixed_bin_types_;
 
-    std::vector<ItemPos> filled_demands_;
+    std::vector<double> filled_demands_;
 
 };
 
diff --git a/test/irregular/irregular_test.cpp b/test/irregular/irregular_test.cpp
index 87fc514a..215efa5a 100644
--- a/test/irregular/irregular_test.cpp
+++ b/test/irregular/irregular_test.cpp
@@ -148,4 +148,7 @@ INSTANTIATE_TEST_SUITE_P(
             }, {
                 fs::path("data") / "irregular" / "users" / "2024-09-11.json",
                 fs::path("data") / "irregular" / "users" / "2024-09-11_solution.json"
+            }, {
+                fs::path("data") / "irregular" / "users" / "2024-09-21.json",
+                fs::path("data") / "irregular" / "users" / "2024-09-21_solution.json"
             }}));