diff --git a/.woodpecker/epub.yml b/.woodpecker/epub.yml
index 57dad7b..8ae02fe 100644
--- a/.woodpecker/epub.yml
+++ b/.woodpecker/epub.yml
@@ -19,6 +19,4 @@ steps:
     commands:
       - pacman -Sy --needed --noconfirm archlinux-keyring
       - pacman -Syu --needed --noconfirm epubcheck inkscape noto-fonts make patch python-myst-parser python-sphinx python-sphinxext-opengraph python-sphinx-sitemap ttf-montserrat
-      # fix sphinx: https://github.com/sphinx-doc/sphinx/issues/11598
-      - patch -Np1 -d /usr/lib/python3.11/site-packages/ -i "$(pwd)/book/patches/sphinx-11766.patch"
       - make -C book epub-check
diff --git a/Dockerfile b/Dockerfile
index 419bbac..a7ee07b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,7 +8,6 @@ WORKDIR /book
 RUN \
   pacman -Sy --needed --noconfirm archlinux-keyring \
   && pacman -Syu --needed --noconfirm inkscape make noto-fonts patch python-myst-parser python-sphinx python-sphinxext-opengraph python-sphinx-sitemap ttf-montserrat \
-  && patch -Np1 -d /usr/lib/python3.11/site-packages/ -i /book/patches/sphinx-11766.patch \
   && make epub html
 
 FROM scratch
diff --git a/book/patches/sphinx-11766.patch b/book/patches/sphinx-11766.patch
deleted file mode 100644
index c507523..0000000
--- a/book/patches/sphinx-11766.patch
+++ /dev/null
@@ -1,26 +0,0 @@
-diff --git a/sphinx/builders/html/__init__.py b/sphinx/builders/html/__init__.py
-index 85067be0178..91d3647597c 100644
---- a/sphinx/builders/html/__init__.py
-+++ b/sphinx/builders/html/__init__.py
-@@ -1061,7 +1061,9 @@ def css_tag(css: _CascadingStyleSheet) -> str:
-                     attrs.append(f'{key}="{html.escape(value, quote=True)}"')
-             uri = pathto(os.fspath(css.filename), resource=True)
-             if checksum := _file_checksum(outdir, css.filename):
--                uri += f'?v={checksum}'
-+                # the EPUB format does not allow the use of query components
-+                if self.name != 'epub':
-+                    uri += f'?v={checksum}'
-             return f'<link {" ".join(sorted(attrs))} href="{uri}" />'
- 
-         ctx['css_tag'] = css_tag
-@@ -1092,7 +1094,9 @@ def js_tag(js: _JavaScript | str) -> str:
-                 # https://github.com/sphinx-doc/sphinx/issues/11658
-                 pass
-             elif checksum := _file_checksum(outdir, js.filename):
--                uri += f'?v={checksum}'
-+                # the EPUB format does not allow the use of query components
-+                if self.name != 'epub':
-+                    uri += f'?v={checksum}'
-             if attrs:
-                 return f'<script {" ".join(sorted(attrs))} src="{uri}"></script>'
-             return f'<script src="{uri}"></script>'
diff --git a/book/source/openpgp.md b/book/source/openpgp.md
index c76b78e..dd5bcc6 100644
--- a/book/source/openpgp.md
+++ b/book/source/openpgp.md
@@ -57,7 +57,7 @@ In 2007, the IETF published [RFC 4880](https://datatracker.ietf.org/doc/html/rfc
 
 An extension for Elliptic Curve Cryptography was defined in [RFC 6637](https://www.rfc-editor.org/rfc/rfc6637), specifying the use of three NIST prime field curves.
 
-Some implementations explored other non-standardized extensions. Notably, algorithms based on Curve 25519 were tentatively defined in the [rfc4880bis](https://www.ietf.org/archive/id/draft-ietf-openpgp-rfc4880bis-10.html#name-elliptic-curve-cryptography) document. These algorithms are widely used, even though rfc4880bis has never been finalized as a new version of the standard.
+Some implementations explored other non-standardized extensions. Notably, algorithms based on Curve 25519 were tentatively defined in [draft-koch-eddsa-for-openpgp](https://datatracker.ietf.org/doc/draft-koch-eddsa-for-openpgp/) document. These algorithms are widely used, even though `draft-koch-eddsa-for-openpgp` was never formally standardized.
 
 (major-implementations)=
 ### Major implementations of OpenPGP
@@ -101,7 +101,7 @@ Initial efforts to incorporate support for OpenPGP version 6 have been undertake
 
 ### Post-quantum cryptography in OpenPGP
 
-There is [ongoing work](https://datatracker.ietf.org/doc/draft-wussler-openpgp-pqc/) to standardize and add support for post-quantum {term}`public-key algorithms<Public Key Algorithm>` in OpenPGP. This project is funded by the [german "BSI"](https://en.wikipedia.org/wiki/Federal_Office_for_Information_Security). Goals include adding support for post-quantum cryptography to Thunderbird and GnuPG. A [presentation](https://datatracker.ietf.org/meeting/113/materials/slides-113-openpgp-a-post-quantum-approach-for-openpgp-00) was given at [IETF 113](https://datatracker.ietf.org/meeting/113/session/openpgp/).
+There is [ongoing work](https://datatracker.ietf.org/doc/draft-ietf-openpgp-pqc/) to standardize and add support for post-quantum {term}`public-key algorithms<Public Key Algorithm>` in OpenPGP. This project is funded by the [german "BSI"](https://en.wikipedia.org/wiki/Federal_Office_for_Information_Security). Goals include adding support for post-quantum cryptography to Thunderbird and GnuPG. A [presentation](https://datatracker.ietf.org/meeting/113/materials/slides-113-openpgp-a-post-quantum-approach-for-openpgp-00) was given at [IETF 113](https://datatracker.ietf.org/meeting/113/session/openpgp/).
 
 ## Zooming in: Internal structure of OpenPGP data