diff --git a/RELEASE_NOTES b/RELEASE_NOTES
index d649c77bd5226b44a9636fdcae8c3c9bf18f869c..8a656e7ea30a2777a8be6315c0641a7621ea4bb2 100644
--- a/RELEASE_NOTES
+++ b/RELEASE_NOTES
@@ -11,5 +11,5 @@
 
    We hope you will like this release as much as we enjoyed working on it, and
    as usual, if you have any questions about it, or any FFmpeg related topic,
-   feel free to join us on the #ffmpeg IRC channel (on irc.freenode.net) or ask
+   feel free to join us on the #ffmpeg IRC channel (on irc.libera.chat) or ask
    on the mailing-lists.
diff --git a/configure b/configure
index 8de1146602ef344638a57e692610a0893a979532..ebd182039607b3d34a1e9fb8e69164aa24e0c43e 100755
--- a/configure
+++ b/configure
@@ -498,7 +498,7 @@ die(){
 
 If you think configure made a mistake, make sure you are using the latest
 version from Git.  If the latest version fails, report the problem to the
-ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
+ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.libera.chat.
 EOF
     if disabled logging; then
         cat <<EOF
diff --git a/doc/writing_filters.txt b/doc/writing_filters.txt
index 5cd4ecd6a4b01b1fced38d8c24e5eb8c0087b4f0..5e4fc1e535ed2ffd8b8cb02057a09215f0f594da 100644
--- a/doc/writing_filters.txt
+++ b/doc/writing_filters.txt
@@ -420,4 +420,4 @@ done:
 
 When all of this is done, you can submit your patch to the ffmpeg-devel
 mailing-list for review.  If you need any help, feel free to come on our IRC
-channel, #ffmpeg-devel on irc.freenode.net.
+channel, #ffmpeg-devel on irc.libera.chat.