diff --git a/.github/workflows/make-release.yml b/.github/workflows/make-release.yml
index 13b2dcc2..76e1c82e 100644
--- a/.github/workflows/make-release.yml
+++ b/.github/workflows/make-release.yml
@@ -93,7 +93,7 @@ jobs:
           version=$(xmlstarlet sel -t -v 'string(/addon/@version)' addon.xml)
           xmlstarlet ed -L -u '/addon/@version' -v "${version}+matrix.1" addon.xml
           xmlstarlet ed -L -u '/addon/requires/import[@addon="xbmc.python"]/@version' -v '3.0.0' addon.xml
-          xmlstarlet ed -L -u '/addon/requires/import[@addon="inputstream.adaptive"]/@version' -v '19.0.7' addon.xml
+          xmlstarlet ed -L -u '/addon/requires/import[@addon="inputstream.adaptive"]/@version' -v '19.0.0' addon.xml
           xmlstarlet ed -L -d '/addon/requires/import[@addon="script.module.infotagger"]' addon.xml
           filename=${{ github.event.repository.name }}-${version}.matrix.1.zip
           cd ..
@@ -115,7 +115,7 @@ jobs:
           version=$(xmlstarlet sel -t -v 'string(/addon/@version)' addon.xml)
           xmlstarlet ed -L -u '/addon/@version' -v "${version}+matrix.unofficial.1" addon.xml
           xmlstarlet ed -L -u '/addon/requires/import[@addon="xbmc.python"]/@version' -v '3.0.0' addon.xml
-          xmlstarlet ed -L -u '/addon/requires/import[@addon="inputstream.adaptive"]/@version' -v '19.0.7' addon.xml
+          xmlstarlet ed -L -u '/addon/requires/import[@addon="inputstream.adaptive"]/@version' -v '19.0.0' addon.xml
           xmlstarlet ed -L -d '/addon/requires/import[@addon="script.module.infotagger"]' addon.xml
           filename=${{ github.event.repository.name }}-${version}.matrix.unofficial.1.zip
           cd ..
diff --git a/addon.xml b/addon.xml
index b2b9fd03..f2b401b5 100644
--- a/addon.xml
+++ b/addon.xml
@@ -3,7 +3,7 @@
     <requires>
         <import addon="xbmc.python" version="3.0.1"/>
         <import addon="script.module.requests" version="2.12.4"/>
-        <import addon="inputstream.adaptive" version="20.3.1"/>
+        <import addon="inputstream.adaptive" version="20.0.0"/>
         <import addon="script.module.inputstreamhelper" version="0.2.2" optional="true"/>
         <import addon="script.module.infotagger" version="0.0.5"/>
     </requires>
diff --git a/resources/lib/youtube_plugin/kodion/impl/xbmc/xbmc_context.py b/resources/lib/youtube_plugin/kodion/impl/xbmc/xbmc_context.py
index 03b9cee7..9a3eb8e3 100644
--- a/resources/lib/youtube_plugin/kodion/impl/xbmc/xbmc_context.py
+++ b/resources/lib/youtube_plugin/kodion/impl/xbmc/xbmc_context.py
@@ -307,7 +307,7 @@ class XbmcContext(AbstractContext):
         'drm': '2.2.12',
         # audio codecs
         'vorbis': '2.3.14',
-        'opus': '19.0.7',
+        'opus': '19.0.0',  # unknown when Opus audio support was first implemented
         'mp4a': True,
         'ac-3': '2.1.15',
         'ec-3': '2.1.15',