diff --git a/.envrc b/.envrc
index 879fb4c..321b877 100644
--- a/.envrc
+++ b/.envrc
@@ -1,7 +1,7 @@
 if has guix; then
   GUIX_PROFILE="${PWD}/.guix-root"
   rm -f "$GUIX_PROFILE"
-  eval "$(guix shell -r "$GUIX_PROFILE" -D -f guix.scm -m manifest.scm --search-paths)"
+  eval "$(guix time-machine -C channels-lock.scm -- shell -r "$GUIX_PROFILE" -D -f guix.scm -m manifest.scm --search-paths)"
 
   # Add development scripts to PATH
   PATH_add "$(pwd)/scripts"
diff --git a/manifest.scm b/manifest.scm
index 233b3d4..359a7d8 100644
--- a/manifest.scm
+++ b/manifest.scm
@@ -8,10 +8,10 @@
   #:use-module (srfi srfi-1))
 
 (packages->manifest
- (append
-  (map cadr (package-direct-inputs mobilizon-reshare))
-  (map specification->package+output
+  (append
+    (map cadr (package-direct-inputs mobilizon-reshare))
+    (map specification->package+output
        '("git-cal" "man-db" "texinfo"
-         "pre-commit" "cloc"
+         "python-pre-commit" "cloc"
          "ripgrep" "python-semver"
          "fd" "docker-compose" "poetry"))))