diff --git a/requirements-test-libraries.txt b/requirements-test-libraries.txt
index 589a25a81..a7f08201d 100644
--- a/requirements-test-libraries.txt
+++ b/requirements-test-libraries.txt
@@ -171,6 +171,7 @@ seedir==0.4.2
 cel-python==0.1.5
 pygwalker==0.4.2
 eth-hash==0.6.0
+pypylon==3.0.1
 
 # ------------------- Platform (OS) specifics
 
diff --git a/src/_pyinstaller_hooks_contrib/tests/test_libraries.py b/src/_pyinstaller_hooks_contrib/tests/test_libraries.py
index e316993f6..c6576e7a3 100644
--- a/src/_pyinstaller_hooks_contrib/tests/test_libraries.py
+++ b/src/_pyinstaller_hooks_contrib/tests/test_libraries.py
@@ -1888,3 +1888,10 @@ def test_pygwalker(pyi_builder):
     pyi_builder.test_source("""
         import pygwalker
     """)
+
+
+@importorskip('pypylon')
+def test_pygwalker(pyi_builder):
+    pyi_builder.test_source("""
+        from pypylon import pylon
+    """)