diff --git a/contrib/guix/libexec/prelude.bash b/contrib/guix/libexec/prelude.bash
index 36a28f2eac..380c187233 100644
--- a/contrib/guix/libexec/prelude.bash
+++ b/contrib/guix/libexec/prelude.bash
@@ -51,7 +51,7 @@ fi
 time-machine() {
     # shellcheck disable=SC2086
     guix time-machine --url=https://git.savannah.gnu.org/git/guix.git \
-                      --commit=d5ca4d4fd713a9f7e17e074a1e37dda99bbb09fc \
+                      --commit=dc4842797bfdc5f9f3f5f725bf189c2b68bd6b5a \
                       --cores="$JOBS" \
                       --keep-failed \
                       --fallback \