diff --git a/monai/deploy/operators/dicom_encapsulated_pdf_writer_operator.py b/monai/deploy/operators/dicom_encapsulated_pdf_writer_operator.py
index 4e4fafd6..9ef96b62 100644
--- a/monai/deploy/operators/dicom_encapsulated_pdf_writer_operator.py
+++ b/monai/deploy/operators/dicom_encapsulated_pdf_writer_operator.py
@@ -41,7 +41,7 @@
 @md.input("pdf_file", DataPath, IOType.DISK)
 @md.input("study_selected_series_list", List[StudySelectedSeries], IOType.IN_MEMORY)
 @md.output("dicom_instance", DataPath, IOType.DISK)
-@md.env(pip_packages=["pydicom >= 1.4.2"])
+@md.env(pip_packages=["pydicom >= 1.4.2", "PyPDF2 >= 2.11.1"])
 class DICOMEncapsulatedPDFWriterOperator(Operator):
 
     DCM_EXTENSION = ".dcm"
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 1409db08..34a81aa3 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -26,6 +26,7 @@ cucim~=21.06; platform_system == "Linux"
 monai>=1.0.0
 docker>=5.0.0
 pydicom>=2.3.0
+PyPDF2>=2.11.1
 highdicom>=0.18.2
 SimpleITK>=2.0.0
 Pillow>=8.0.0
diff --git a/requirements-examples.txt b/requirements-examples.txt
index 307c99ee..a6efd43b 100644
--- a/requirements-examples.txt
+++ b/requirements-examples.txt
@@ -1,12 +1,13 @@
-scikit-image >= 0.17.2
-pydicom >= 2.3.0
+scikit-image>=0.17.2
+pydicom>=2.3.0
+PyPDF2>=2.11.1
 highdicom>=0.18.2
-SimpleITK >= 2.0.0
-Pillow >= 8.0.0
+SimpleITK>=2.0.0
+Pillow>=8.0.0
 numpy-stl>=2.12.0
 trimesh>=3.8.11
-nibabel >= 3.2.1
-numpy-stl >= 2.12.0
-trimesh >= 3.8.11
-torch >= 1.10.0
-monai >= 1.0.0
\ No newline at end of file
+nibabel>=3.2.1
+numpy-stl>=2.12.0
+trimesh>=3.8.11
+torch>=1.10.0
+monai>=1.0.0
\ No newline at end of file