diff --git a/.gitignore b/.gitignore
index dfc38dc..02580d4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -177,7 +177,6 @@ fabric.properties
 .idea
 */local_testing.toml
 .direnv/
-etc/
 var/
 docker-image.tar.gz
 .guix-root
diff --git a/channels-lock.scm b/channels-lock.scm
index d536362..520f730 100644
--- a/channels-lock.scm
+++ b/channels-lock.scm
@@ -5,7 +5,7 @@
   (name 'guix)
   (url "https://git.savannah.gnu.org/git/guix.git")
   (commit
-   "07f55a361e23152b48f34425f116a725cce39e48")
+   "72abf9b9b82d2f5f34b7d22b7aae6f2398336a93")
   (introduction
    (make-channel-introduction
     "afb9f2752315f131e4ddd44eba02eed403365085"
diff --git a/docker/mobilizon-reshare.scm b/docker/mobilizon-reshare.scm
index c03bb5f..aae1eb8 100644
--- a/docker/mobilizon-reshare.scm
+++ b/docker/mobilizon-reshare.scm
@@ -246,28 +246,31 @@ simplify testing of asynchronous tornado applications.")
                           #:select? (git-predicate %source-dir)))
       (build-system python-build-system)
       (arguments
-       `(#:phases
-         (modify-phases %standard-phases
-           (add-after 'unpack 'generate-setup.py
-             (lambda* (#:key inputs outputs #:allow-other-keys)
-               ;; This is a hack needed to get poetry's
-               ;; setup.py.
-               (setenv "POETRY_VIRTUALENVS_CREATE" "false")
-               (invoke "poetry" "build" "-f" "sdist")
-               (invoke "bash" "-c"
-                       "tar --wildcards -xvf dist/*-`poetry version -s`.tar.gz -O '*/setup.py' > setup.py")))
-           (replace 'check
-             (lambda* (#:key tests? inputs outputs #:allow-other-keys)
-               (when tests?
-                 (setenv "POETRY_VIRTUALENVS_CREATE" "false")
-                 (invoke "./scripts/run_pipeline_tests.sh"))))
-           (add-before 'sanity-check 'set-dummy-config
-             (lambda _
-               ;; This is needed to prevent the tool from
-               ;; crashing at startup during the sanity check.
-               (setenv "SECRETS_FOR_DYNACONF"
-                       (string-append (getcwd)
-                                      "/mobilizon_reshare/.secrets.toml")))))))
+       (list #:phases
+             #~(modify-phases %standard-phases
+                 (add-after 'unpack 'generate-setup.py
+                   (lambda _
+                     ;; This is a hack needed to get poetry's
+                     ;; setup.py.
+                     (setenv "POETRY_VIRTUALENVS_CREATE" "false")
+                     (invoke "poetry" "build" "-f" "sdist")
+                     (invoke "bash" "-c"
+                             "tar --wildcards -xvf dist/*-`poetry version -s`.tar.gz -O '*/setup.py' > setup.py")))
+                 (replace 'check
+                   (lambda* (#:key tests? #:allow-other-keys)
+                     (when tests?
+                       (setenv "POETRY_VIRTUALENVS_CREATE" "false")
+                       (invoke "./scripts/run_pipeline_tests.sh"))))
+                 (add-after 'install 'install-completion-scripts
+                   (lambda _
+                     (copy-recursively "etc" (string-append #$output "/etc"))))
+                 (add-before 'sanity-check 'set-dummy-config
+                   (lambda _
+                     ;; This is needed to prevent the tool from
+                     ;; crashing at startup during the sanity check.
+                     (setenv "SECRETS_FOR_DYNACONF"
+                             (string-append (getcwd)
+                                            "/mobilizon_reshare/.secrets.toml")))))))
       (native-inputs
        (list python-iniconfig
              poetry
diff --git a/etc/bash_completion.d/mobilizon-reshare-completion.bash b/etc/bash_completion.d/mobilizon-reshare-completion.bash
new file mode 100644
index 0000000..b3f3b5f
--- /dev/null
+++ b/etc/bash_completion.d/mobilizon-reshare-completion.bash
@@ -0,0 +1,29 @@
+_mobilizon_reshare_completion() {
+    local IFS=$'\n'
+    local response
+
+    response=$(env COMP_WORDS="${COMP_WORDS[*]}" COMP_CWORD=$COMP_CWORD _MOBILIZON_RESHARE_COMPLETE=bash_complete $1)
+
+    for completion in $response; do
+        IFS=',' read type value <<< "$completion"
+
+        if [[ $type == 'dir' ]]; then
+            COMPREPLY=()
+            compopt -o dirnames
+        elif [[ $type == 'file' ]]; then
+            COMPREPLY=()
+            compopt -o default
+        elif [[ $type == 'plain' ]]; then
+            COMPREPLY+=($value)
+        fi
+    done
+
+    return 0
+}
+
+_mobilizon_reshare_completion_setup() {
+    complete -o nosort -F _mobilizon_reshare_completion mobilizon-reshare
+}
+
+_mobilizon_reshare_completion_setup;
+
diff --git a/etc/fish/completions/mobilizon-reshare.fish b/etc/fish/completions/mobilizon-reshare.fish
new file mode 100644
index 0000000..aeac93f
--- /dev/null
+++ b/etc/fish/completions/mobilizon-reshare.fish
@@ -0,0 +1,22 @@
+function _mobilizon_reshare_completion;
+    set -l response;
+
+    for value in (env _MOBILIZON_RESHARE_COMPLETE=fish_complete COMP_WORDS=(commandline -cp) COMP_CWORD=(commandline -t) mobilizon-reshare);
+        set response $response $value;
+    end;
+
+    for completion in $response;
+        set -l metadata (string split "," $completion);
+
+        if test $metadata[1] = "dir";
+            __fish_complete_directories $metadata[2];
+        else if test $metadata[1] = "file";
+            __fish_complete_path $metadata[2];
+        else if test $metadata[1] = "plain";
+            echo $metadata[2];
+        end;
+    end;
+end;
+
+complete --no-files --command mobilizon-reshare --arguments "(_mobilizon_reshare_completion)";
+
diff --git a/etc/zsh/mobilizon-reshare-completion.zsh b/etc/zsh/mobilizon-reshare-completion.zsh
new file mode 100644
index 0000000..fe9d6ab
--- /dev/null
+++ b/etc/zsh/mobilizon-reshare-completion.zsh
@@ -0,0 +1,35 @@
+#compdef mobilizon-reshare
+
+_mobilizon_reshare_completion() {
+    local -a completions
+    local -a completions_with_descriptions
+    local -a response
+    (( ! $+commands[mobilizon-reshare] )) && return 1
+
+    response=("${(@f)$(env COMP_WORDS="${words[*]}" COMP_CWORD=$((CURRENT-1)) _MOBILIZON_RESHARE_COMPLETE=zsh_complete mobilizon-reshare)}")
+
+    for type key descr in ${response}; do
+        if [[ "$type" == "plain" ]]; then
+            if [[ "$descr" == "_" ]]; then
+                completions+=("$key")
+            else
+                completions_with_descriptions+=("$key":"$descr")
+            fi
+        elif [[ "$type" == "dir" ]]; then
+            _path_files -/
+        elif [[ "$type" == "file" ]]; then
+            _path_files -f
+        fi
+    done
+
+    if [ -n "$completions_with_descriptions" ]; then
+        _describe -V unsorted completions_with_descriptions -U
+    fi
+
+    if [ -n "$completions" ]; then
+        compadd -U -V unsorted -a completions
+    fi
+}
+
+compdef _mobilizon_reshare_completion mobilizon-reshare;
+
diff --git a/manifest.scm b/manifest.scm
index d6fb027..5349477 100644
--- a/manifest.scm
+++ b/manifest.scm
@@ -1,14 +1,34 @@
 (define-module (manifest)
   #:use-module (docker mobilizon-reshare)
   #:use-module (gnu packages)
+  #:use-module (guix channels)
+  #:use-module (guix inferior)
   #:use-module (guix packages)
-  #:use-module (guix profiles))
+  #:use-module (guix profiles)
+  #:use-module (srfi srfi-1))
 
+(define channels
+  ;; This is the old revision from which we want to
+  ;; extract docker-compose.
+  (list (channel
+         (name 'guix)
+         (url "https://git.savannah.gnu.org/git/guix.git")
+         (commit
+          "07f55a361e23152b48f34425f116a725cce39e48"))))
+
+(define inferior
+  ;; An inferior representing the above revision.
+  (inferior-for-channels channels))
+
+;; Now create a manifest with the current packages
+;; and the old "docker-compose" package.
 (packages->manifest
   (append
+    ;; docker-compose fails to build on current master, hence this hack.
+    (list (first (lookup-inferior-packages inferior "docker-compose")))
     (map cadr (package-direct-inputs mobilizon-reshare.git))
     (map specification->package+output
        '("git-cal" "man-db" "texinfo"
          "python-pre-commit" "cloc"
          "ripgrep" "python-semver"
-         "fd" "docker-compose"))))
+         "fd"))))
diff --git a/scripts/generate_completion_scripts.sh b/scripts/generate_completion_scripts.sh
new file mode 100755
index 0000000..272753e
--- /dev/null
+++ b/scripts/generate_completion_scripts.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+set -eu
+
+export _MOBILIZON_RESHARE_COMPLETE=bash_source
+scripts/mobilizon-reshare.sh > etc/bash_completion.d/mobilizon-reshare-completion.bash
+
+export _MOBILIZON_RESHARE_COMPLETE=fish_source
+scripts/mobilizon-reshare.sh > etc/fish/completions/mobilizon-reshare.fish
+
+export _MOBILIZON_RESHARE_COMPLETE=zsh_source
+scripts/mobilizon-reshare.sh > etc/zsh/mobilizon-reshare-completion.zsh
diff --git a/scripts/release.sh b/scripts/release.sh
index 26be1cc..2c46fce 100755
--- a/scripts/release.sh
+++ b/scripts/release.sh
@@ -6,6 +6,7 @@ myself="$(basename "$0")"
 version_file="$(pwd)/mobilizon_reshare/VERSION"
 pyproject_toml="$(pwd)/pyproject.toml"
 docker_compose_yml="$(pwd)/docker-compose.yml"
+completion_dir="$(pwd)/etc"
 current_branch="$(git rev-parse --abbrev-ref HEAD)"
 current_commit="$(git log -1 --format='%H')"
 dryrun=0
@@ -74,19 +75,26 @@ current-version() {
 release-new-version() {
   current="$(current-version)"
   next="$(pysemver bump "$1" "$current")"
-  echo -e "\nRELEASING VERSION: ${next}"
+  echo "RELEASING VERSION: ${next}"
 
-  [ "$verbose" = "1" ] && echo "Updating $version_file"
+  [ "$verbose" = "1" ] && echo "Updating ${version_file}..."
   [ "$dryrun" = "0" ] && printf "%s" "$next" >"$version_file"
 
-  [ "$verbose" = "1" ] && echo "Updating $pyproject_toml"
+  [ "$verbose" = "1" ] && echo "Updating ${pyproject_toml}..."
   [ "$dryrun" = "0" ] && sed -i -E "s/version.*=.*\"${current}\"$/version = \"${next}\"/" "$pyproject_toml"
 
-  [ "$verbose" = "1" ] && echo "Updating $docker_compose_yml"
+  [ "$verbose" = "1" ] && echo "Updating ${docker_compose_yml}..."
   [ "$dryrun" = "0" ] && sed -i "s/${current}/${next}/" "$docker_compose_yml"
 
-  [ "$verbose" = "1" ] && echo "Committing ${pyproject_toml}, ${docker_compose_yml} and ${version_file}"
-  [ "$dryrun" = "0" ] && git add "$docker_compose_yml" "${pyproject_toml}" "${version_file}" && git commit -m "Release v${next}."
+  [ "$verbose" = "1" ] && echo "Generating completion scripts in ${completion_dir}..."
+  [ "$dryrun" = "0" ] && scripts/generate_completion_scripts.sh
+
+  [ "$verbose" = "1" ] && echo "Committing ${pyproject_toml}, ${completion_dir}, ${docker_compose_yml} and ${version_file}"
+  [ "$dryrun" = "0" ] && git add "$docker_compose_yml" \
+                                 "${pyproject_toml}" \
+                                 "${completion_dir}"
+                                 "${version_file}" && \
+                         git commit -m "Release v${next}."
 
   [ "$verbose" = "1" ] && echo "Tagging Git HEAD with v${next}"
   [ "$dryrun" = "0" ] && git tag "v${next}"