diff --git a/README.md b/README.md
index fed27f8e..e5f1d319 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 <img src="docs/images/logo.svg" width="240" alt="OCRmyPDF">
 
-[![Travis build status][travis]](https://travis-ci.org/jbarlow83/OCRmyPDF) [![PyPI version][pypi]](https://pypi.org/project/ocrmypdf/) ![Homebrew version][homebrew] ![ReadTheDocs][docs]
+[![Travis build status][travis]](https://travis-ci.org/jbarlow83/OCRmyPDF) [![PyPI version][pypi]](https://pypi.org/project/ocrmypdf/) ![Homebrew version][homebrew] ![ReadTheDocs][docs] ![Python versions][pyversions]
 
 [travis]: https://travis-ci.org/jbarlow83/OCRmyPDF.svg?branch=master "Travis build status"
 
@@ -10,6 +10,8 @@
 
 [docs]: https://readthedocs.org/projects/ocrmypdf/badge/?version=latest "RTD"
 
+[pyversions]: https://img.shields.io/pypi/pyversions/ocrmypdf "Supported Python versions"
+
 OCRmyPDF adds an OCR text layer to scanned PDF files, allowing them to be searched or copy-pasted.
 
 ```bash
@@ -120,7 +122,7 @@ If you detect an issue, please:
 Requirements
 ------------
 
-Runs on CPython 3.5, 3.6 and 3.7. Requires external program installations of Ghostscript, Tesseract OCR, QPDF, and Leptonica. ocrmypdf is pure Python, but uses CFFI to portably generate library bindings.
+In addition to the required Python version (3.6+), OCRmyPDF requires external program installations of Ghostscript, Tesseract OCR, QPDF, and Leptonica. ocrmypdf is pure Python, but uses CFFI to portably generate library bindings.
 
 Press & Media
 -------------
diff --git a/docs/installation.rst b/docs/installation.rst
index 27e27671..77702791 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -517,7 +517,7 @@ manager. ``pip`` cannot provide them.
 
 As of ocrmypdf 7.2.1, the following versions are recommended:
 
--  Python 3.7
+-  Python 3.7 or 3.8
 -  Ghostscript 9.23 or newer
 -  qpdf 8.2.1
 -  Tesseract 4.0.0 or newer
diff --git a/docs/release_notes.rst b/docs/release_notes.rst
index f90f096d..fbc7c06f 100644
--- a/docs/release_notes.rst
+++ b/docs/release_notes.rst
@@ -13,6 +13,13 @@ Note that it is licensed under GPLv3, so scripts that
 ``import ocrmypdf`` and are released publicly should probably also be
 licensed under GPLv3.
 
+v9.0.4
+======
+
+-  Fixed compatibility with Python 3.8.
+-  Fixed Tesseract settings for ``--user-words`` and ``--user-patterns``.
+-  We now require pikepdf 1.6.5.
+
 v9.0.3
 ======
 
diff --git a/requirements/main.txt b/requirements/main.txt
index 24087d27..5fac1105 100644
--- a/requirements/main.txt
+++ b/requirements/main.txt
@@ -5,7 +5,7 @@ chardet == 3.0.4
 cffi == 1.12.2
 img2pdf == 0.3.3
 pdfminer.six == 20181108
-pikepdf == 1.6.1
+pikepdf == 1.6.5
 Pillow >= 5.0.0, != 5.1.0 ; sys_platform == "darwin"
 pycparser == 2.19
 python-xmp-toolkit == 2.0.1
diff --git a/setup.py b/setup.py
index 6b2b7d11..e9d167f2 100644
--- a/setup.py
+++ b/setup.py
@@ -68,6 +68,7 @@ setup(
     classifiers=[
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
         "Development Status :: 5 - Production/Stable",
         "Environment :: Console",
         "Intended Audience :: End Users/Desktop",
@@ -96,7 +97,7 @@ setup(
         'cffi >= 1.9.1',  # must be a setup and install requirement
         'img2pdf >= 0.3.0, < 0.4',  # pure Python, so track HEAD closely
         'pdfminer.six == 20181108',
-        'pikepdf >= 1.6.0, < 2',
+        'pikepdf >= 1.6.5, < 2',
         'Pillow >= 4.0.0, != 5.1.0 ; sys_platform == "darwin"',
         # Pillow < 4 has BytesIO/TIFF bug w/img2pdf 0.2.3
         # block 5.1.0, broken wheels