diff --git a/cps/uploader.py b/cps/uploader.py
index ecf4868c..17e28d87 100644
--- a/cps/uploader.py
+++ b/cps/uploader.py
@@ -37,12 +37,12 @@ except (ImportError, RuntimeError) as e:
     use_generic_pdf_cover = True
 
 try:
-    from PyPDF2 import PdfFileReader
+    from PyPDF2 import PdfReader
     use_pdf_meta = True
 except ImportError as ex:
     log.debug('PyPDF2 is recommended for best performance in metadata extracting from pdf files: %s', ex)
     try:
-        from PyPDF3 import PdfFileReader
+        from PyPDF3 import PdfFileReader as PdfReader
         use_pdf_meta = True
     except ImportError as e:
         log.debug('Cannot import PyPDF3/PyPDF2, extracting pdf metadata will not work: %s / %s', e)
@@ -157,7 +157,7 @@ def pdf_meta(tmp_file_path, original_file_name, original_file_extension):
 
     if use_pdf_meta:
         with open(tmp_file_path, 'rb') as f:
-            pdf_file = PdfFileReader(f)
+            pdf_file = PdfReader(f)
             doc_info = pdf_file.getDocumentInfo()
             try:
                 doc_info = pdf_file.getDocumentInfo()
diff --git a/requirements.txt b/requirements.txt
index 494866a8..decfee4c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ Flask-Principal>=0.3.2,<0.5.1
 backports_abc>=0.4
 Flask>=1.0.2,<2.2.0
 iso-639>=0.4.5,<0.5.0
-PyPDF2>=1.20,<3.1.0
+PyPDF2>=1.28,<3.1.0
 pytz>=2016.10
 requests>=2.11.1,<2.28.0
 SQLAlchemy>=1.3.0,<1.5.0
diff --git a/setup.cfg b/setup.cfg
index f950aa4b..20e54749 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -18,7 +18,6 @@ classifiers =
 	Development Status :: 5 - Production/Stable
 	License :: OSI Approved :: GNU Affero General Public License v3
 	Programming Language :: Python :: 3
-	Programming Language :: Python :: 3.5
 	Programming Language :: Python :: 3.6
 	Programming Language :: Python :: 3.7
 	Programming Language :: Python :: 3.8
@@ -47,7 +46,7 @@ install_requires =
 	backports_abc>=0.4
 	Flask>=1.0.2,<2.2.0
 	iso-639>=0.4.5,<0.5.0
-	PyPDF2>=1.20,<3.1.0
+	PyPDF2>=1.28,<3.1.0
 	pytz>=2016.10
 	requests>=2.11.1,<2.28.0
 	SQLAlchemy>=1.3.0,<1.5.0