diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 97c7056..4107e62 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -32,7 +32,7 @@ jobs:
     - uses: actions/checkout@v4
     - uses: actions/setup-python@v5
       with:
-        python-version: '3.10'
+        python-version: '3.12'
         cache: 'pip'
         cache-dependency-path: 'requirements-dev.txt'
     - name: Dependencies
@@ -49,7 +49,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Select Python version
-      run: echo "/opt/python/cp310-cp310/bin" >> $GITHUB_PATH
+      run: echo "/opt/python/cp312-cp312/bin" >> $GITHUB_PATH
     - uses: actions-rs/toolchain@v1
       with:
         profile: minimal
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index a1d88f5..2aa9047 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -16,7 +16,7 @@ jobs:
     - uses: actions/checkout@v4
     - uses: actions/setup-python@v5
       with:
-        python-version: '3.10'
+        python-version: '3.12'
         cache: 'pip'
         cache-dependency-path: 'requirements-dev.txt'
     - name: Dependencies
@@ -56,7 +56,7 @@ jobs:
     - uses: actions/checkout@v4
     - uses: actions/setup-python@v5
       with:
-        python-version: '3.10'
+        python-version: '3.12'
         cache: 'pip'
         cache-dependency-path: 'requirements-dev.txt'
     - name: Dependencies
@@ -87,7 +87,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Select Python version
-      run: echo "/opt/python/cp310-cp310/bin" >> $GITHUB_PATH
+      run: echo "/opt/python/cp312-cp312/bin" >> $GITHUB_PATH
     - uses: actions-rs/toolchain@v1
       with:
         profile: minimal
diff --git a/plumber/asset/brush.py b/plumber/asset/brush.py
index 17f4624..b8b95b0 100644
--- a/plumber/asset/brush.py
+++ b/plumber/asset/brush.py
@@ -33,9 +33,7 @@ def import_solid(collection: Collection, brush_name: str, solid: BuiltSolid) ->
     mesh.polygons.foreach_set("vertices", solid.polygon_vertices())
     mesh.polygons.foreach_set("material_index", solid.polygon_material_indices())
 
-    # Blender 3.6 sets meshes to smooth by default, which looks bad
-    if bpy.app.version >= (3, 6, 0):
-        mesh.shade_flat()
+    mesh.shade_flat()
 
     mesh.update()
 
@@ -74,9 +72,7 @@ def import_merged_solids(
         "material_index", merged_solids.polygon_material_indices()
     )
 
-    # Blender 3.6 sets meshes to smooth by default, which looks bad
-    if bpy.app.version >= (3, 6, 0):
-        mesh.shade_flat()
+    mesh.shade_flat()
 
     mesh.update()
 
diff --git a/plumber/asset/material.py b/plumber/asset/material.py
index 3fb02ae..cf8bce2 100644
--- a/plumber/asset/material.py
+++ b/plumber/asset/material.py
@@ -12,11 +12,10 @@
     ".png": "PNG",
 }
 
-NODE_INPUT_SOCKET_MAP = {}
-
-if bpy.app.version >= (4, 0, 0):
-    NODE_INPUT_SOCKET_MAP["Specular"] = "Specular IOR Level"
-    NODE_INPUT_SOCKET_MAP["Emission"] = "Emission Color"
+NODE_INPUT_SOCKET_MAP = {
+    "Specular": "Specular IOR Level",
+    "Emission": "Emission Color",
+}
 
 
 def import_texture(texture: Texture) -> None:
diff --git a/plumber/asset/model.py b/plumber/asset/model.py
index c607575..18e0675 100644
--- a/plumber/asset/model.py
+++ b/plumber/asset/model.py
@@ -177,9 +177,6 @@ def import_mesh(
     mesh_data.polygons.foreach_set("use_smooth", [True] * polygons_len)
     mesh_data.update(calc_edges=True)
 
-    if bpy.app.version < (4, 1, 0):
-        mesh_data.use_auto_smooth = True
-
     mesh_data.normals_split_custom_set_from_vertices(mesh.normals())
 
     uv_layer = mesh_data.uv_layers.new()
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 2ee12b9..f724f8e 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,4 +1,4 @@
-fake-bpy-module-2.82
+fake-bpy-module-4.2
 setuptools
 setuptools-rust
 black