diff --git a/.github/workflows/flatpak.yaml b/.github/workflows/flatpak.yaml
deleted file mode 100644
index ffdfc9fa..00000000
--- a/.github/workflows/flatpak.yaml
+++ /dev/null
@@ -1,21 +0,0 @@
-name: Flatpak
-
-on: push
-#  push:
-#    branches: [main]
-#  pull_request:
-
-jobs:
-  flatpak:
-    name: "Flatpak"
-    runs-on: ubuntu-latest
-    container:
-      image: bilelmoussaoui/flatpak-github-actions:kde-6.5
-      options: --privileged
-    steps:
-    - uses: actions/checkout@v4
-    - uses: flatpak/flatpak-github-actions/flatpak-builder@v6
-      with:
-        bundle: xca.flatpak
-        manifest-path: misc/de.hohnstaedt.xca.yaml
-        cache-key: flatpak-builder-${{ github.sha }}
diff --git a/misc/CMakeLists.txt b/misc/CMakeLists.txt
index 09088f2c..4b790b8f 100644
--- a/misc/CMakeLists.txt
+++ b/misc/CMakeLists.txt
@@ -66,9 +66,6 @@ if (UNIX AND NOT APPLE)
   install(FILES misc/xca.xml
         DESTINATION ${CMAKE_INSTALL_DATADIR}/mime/packages
   )
-  install(FILES misc/de.hohnstaedt.xca.metainfo.xml
-        DESTINATION ${CMAKE_INSTALL_DATADIR}/metainfo
-  )
 elseif(WIN32)
   install(FILES ${TEXT_FILES} ${XCA_TEMPLATES}
 	  DESTINATION ${RUNTIME_DEST}
diff --git a/misc/de.hohnstaedt.xca.metainfo.xml b/misc/de.hohnstaedt.xca.metainfo.xml
deleted file mode 100644
index 46cf4f7c..00000000
--- a/misc/de.hohnstaedt.xca.metainfo.xml
+++ /dev/null
@@ -1,51 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<component type="desktop-application">
-    <id>de.hohnstaedt.xca</id>
-    <name>XCA</name>
-    <summary>X Certificate and Key management</summary>
-    <metadata_license>CC0-1.0</metadata_license>
-    <project_license>BSD-3-Clause</project_license>
-    <provides>
-        <binary>xca</binary>
-    </provides>
-    <launchable type="desktop-id">de.hohnstaedt.xca.desktop</launchable>
-    <description>
-        <p>
-            XCA is intended for creating and managing X.509 certificates, certificate requests, RSA, DSA and EC private keys, Smartcards and CRLs.
-            Everything that is needed for a CA is implemented.
-            All CAs can sign sub-CAs recursively. These certificate chains are shown clearly.
-            For an easy company-wide use there are customiseable templates that can be used for certificate or request generation.
-        </p>
-        <p>Features:</p>
-        <ul>
-            <li>Start your own PKI and create all kinds of private keys, certificates, requests or CRLs</li>
-            <li>Import and export them in any format like PEM, DER, PKCS#7, PKCS#12</li>
-            <li>Use them for your IPsec, OpenVPN, TLS or any other certificate based setup</li>
-            <li>Manage your Smart-Cards via PKCS#11 interface</li>
-            <li>Export certificates and requests as OpenSSL config file</li>
-            <li>Create Subject- and/or Extension- templates to ease issuing similar certs</li>
-            <li>Convert existing certificates or requests to templates</li>
-            <li>Get the broad support of x509v3 extensions as flexible as OpenSSL but user friendlier</li>
-            <li>Adapt the columns to have your important information at a glance</li>
-        </ul>
-    </description>
-    <developer_name>Christian Hohnstädt, Kerstin Steinhauff et al.</developer_name>
-    <releases>
-        <release date="2023-09-24" version="2.5.0"></release>
-        <release date="2021-05-07" version="2.4.0"></release>
-        <release date="2020-04-29" version="2.3.0"></release>
-        <release date="2020-01-30" version="2.2.1"></release>
-    </releases>
-    <screenshots>
-        <screenshot type="default">
-            <image>https://www.hohnstaedt.de/xca/images/screenshots/XCA-Screenshot-certs.png</image>
-        </screenshot>
-        <screenshot>
-            <image>https://www.hohnstaedt.de/xca/images/screenshots/XCA-Screenshot-keygen.png</image>
-        </screenshot>
-    </screenshots>
-    <content_rating type="oars-1.1"/>
-    <url type="homepage">https://www.hohnstaedt.de/xca/</url>
-    <url type="bugtracker">https://github.com/chris2511/xca/issues</url>
-    <url type="help">https://www.hohnstaedt.de/xca/index.php/documentation/manual</url>
-</component>
diff --git a/misc/de.hohnstaedt.xca.yaml b/misc/de.hohnstaedt.xca.yaml
deleted file mode 100644
index 30839eda..00000000
--- a/misc/de.hohnstaedt.xca.yaml
+++ /dev/null
@@ -1,28 +0,0 @@
-app-id: de.hohnstaedt.xca
-runtime: org.kde.Platform
-runtime-version: '6.5'
-sdk: org.kde.Sdk
-rename-desktop-file: xca.desktop
-
-finish-args:
-  # X11 + XShm access
-  - --share=ipc
-  - --share=network
-  - --socket=fallback-x11
-  # Qt wants OpenGL access
-  - --device=dri
-  # Wayland access
-  - --socket=wayland
-  # Needs to save files locally
-  - --filesystem=home
-  - --socket=pcsc
-command: xca
-modules:
-  - python3-sphinx.json
-  - name: xca
-    buildsystem: cmake-ninja
-    config-opts:
-      - -DCMAKE_BUILD_TYPE=RelWithDebInfo
-    sources:
-      - type: dir
-        path: ..
diff --git a/misc/python3-sphinx.json b/misc/python3-sphinx.json
deleted file mode 100644
index 0288db01..00000000
--- a/misc/python3-sphinx.json
+++ /dev/null
@@ -1,109 +0,0 @@
-{
-    "name": "python3-sphinx",
-    "buildsystem": "simple",
-    "build-commands": [
-        "pip3 install --verbose --exists-action=i --no-index --find-links=\"file://${PWD}\" --prefix=${FLATPAK_DEST} \"sphinx\" --no-build-isolation"
-    ],
-    "sources": [
-        {
-            "type": "file",
-            "url": "https://files.pythonhosted.org/packages/ff/37/b0241795c3a320a3def948cd0d06daf70310e7fea1d8fda312629bc22ea9/Babel-2.13.0-py3-none-any.whl",
-            "sha256": "fbfcae1575ff78e26c7449136f1abbefc3c13ce542eeb13d43d50d8b047216ec"
-        },
-        {
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-            "url": "https://files.pythonhosted.org/packages/bc/c3/f068337a370801f372f2f8f6bad74a5c140f6fda3d9de154052708dd3c65/Jinja2-3.1.2-py3-none-any.whl",
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-        },
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-            "url": "https://files.pythonhosted.org/packages/6d/7c/59a3248f411813f8ccba92a55feaac4bf360d29e2ff05ee7d8e1ef2d7dbf/MarkupSafe-2.1.3.tar.gz",
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-        },
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\ No newline at end of file