diff --git a/.ci/display_test.py b/.ci/display_test.py
deleted file mode 100644
index 9144c8caa00..00000000000
--- a/.ci/display_test.py
+++ /dev/null
@@ -1,7 +0,0 @@
-"""Quickly check if VTK off screen plotting works."""
-import pyvista
-from pyvista.plotting import system_supports_plotting
-
-print("system_supports_plotting", system_supports_plotting())
-pyvista.OFF_SCREEN = True
-pyvista.plot(pyvista.Sphere())
diff --git a/.ci/requirements_test_xvfb.txt b/.ci/requirements_test_xvfb.txt
deleted file mode 100644
index adf211d1991..00000000000
--- a/.ci/requirements_test_xvfb.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-matplotlib==3.2
-pyvista>=0.27.2
diff --git a/pyproject.toml b/pyproject.toml
index a7f8a8dc0a8..11f833408e8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,6 @@ classifiers = [
 ]
 dependencies = [
     "ansys-dpf-gate>=0.3.0",
-    "imageio < 2.28.1",
     "importlib-metadata >=4.0",
     "numpy",
     "packaging",
@@ -35,7 +34,15 @@ dependencies = [
 ]
 
 [project.optional-dependencies]
-plotting = ["pyvista>=0.32.0", "matplotlib>=3.2"]
+plotting = [
+    # 2D chart plotting
+    "matplotlib>=3.2",
+    # 3D plotting
+    "pyvista>=0.32.0",
+    # Animations
+    "imageio < 2.28.1",
+    "imageio-ffmpeg",
+]
 
 [tool.flit.module]
 name = "ansys.dpf.core"
diff --git a/requirements/requirements_docs.txt b/requirements/requirements_docs.txt
index d4ea95d5166..7c9cc9d70b5 100644
--- a/requirements/requirements_docs.txt
+++ b/requirements/requirements_docs.txt
@@ -1,6 +1,7 @@
 ansys_sphinx_theme==0.9.5
 enum-tools[sphinx]==0.9.0.post1
 graphviz==0.20.1
+imageio==2.28.0
 imageio-ffmpeg==0.4.7
 nbsphinx==0.9.1
 pypandoc==1.11
diff --git a/requirements/requirements_install.txt b/requirements/requirements_install.txt
index 81daaf6d3a8..35c3c7f65e3 100644
--- a/requirements/requirements_install.txt
+++ b/requirements/requirements_install.txt
@@ -1,5 +1,4 @@
 ansys-dpf-gate==0.3.1
-imageio==2.28.0
 importlib-metadata==6.6.0
 numpy==1.24.1
 packaging==23.0
diff --git a/requirements/requirements_test.txt b/requirements/requirements_test.txt
index 460eb96d2ed..635056c860e 100644
--- a/requirements/requirements_test.txt
+++ b/requirements/requirements_test.txt
@@ -1,5 +1,7 @@
 ansys-platform-instancemanagement==1.0.2
 coverage==7.1.0
+imageio==2.28.0
+imageio-ffmpeg==0.4.7
 pytest==7.2.0
 pytest-cov==4.0.0
 pytest-order==1.1.0