diff --git a/doc/bash-completion.sh b/doc/bash-completion.sh
index a5a94050e..1bad0e2ac 100644
--- a/doc/bash-completion.sh
+++ b/doc/bash-completion.sh
@@ -269,8 +269,11 @@ _restic_backup()
     local_nonpersistent_flags+=("--tag=")
     flags+=("--time=")
     local_nonpersistent_flags+=("--time=")
+    flags+=("--with-atime")
+    local_nonpersistent_flags+=("--with-atime")
     flags+=("--cacert=")
     flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
     flags+=("--json")
     flags+=("--limit-download=")
     flags+=("--limit-upload=")
@@ -306,6 +309,7 @@ _restic_cat()
     local_nonpersistent_flags+=("--help")
     flags+=("--cacert=")
     flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
     flags+=("--json")
     flags+=("--limit-download=")
     flags+=("--limit-upload=")
@@ -347,6 +351,45 @@ _restic_check()
     local_nonpersistent_flags+=("--with-cache")
     flags+=("--cacert=")
     flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
+    flags+=("--json")
+    flags+=("--limit-download=")
+    flags+=("--limit-upload=")
+    flags+=("--no-cache")
+    flags+=("--no-lock")
+    flags+=("--option=")
+    two_word_flags+=("-o")
+    flags+=("--password-file=")
+    two_word_flags+=("-p")
+    flags+=("--quiet")
+    flags+=("-q")
+    flags+=("--repo=")
+    two_word_flags+=("-r")
+
+    must_have_one_flag=()
+    must_have_one_noun=()
+    noun_aliases=()
+}
+
+_restic_diff()
+{
+    last_command="restic_diff"
+    commands=()
+
+    flags=()
+    two_word_flags=()
+    local_nonpersistent_flags=()
+    flags_with_completion=()
+    flags_completion=()
+
+    flags+=("--help")
+    flags+=("-h")
+    local_nonpersistent_flags+=("--help")
+    flags+=("--metadata")
+    local_nonpersistent_flags+=("--metadata")
+    flags+=("--cacert=")
+    flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
     flags+=("--json")
     flags+=("--limit-download=")
     flags+=("--limit-upload=")
@@ -389,6 +432,7 @@ _restic_dump()
     local_nonpersistent_flags+=("--tag=")
     flags+=("--cacert=")
     flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
     flags+=("--json")
     flags+=("--limit-download=")
     flags+=("--limit-upload=")
@@ -446,6 +490,7 @@ _restic_find()
     local_nonpersistent_flags+=("--tag=")
     flags+=("--cacert=")
     flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
     flags+=("--json")
     flags+=("--limit-download=")
     flags+=("--limit-upload=")
@@ -520,6 +565,7 @@ _restic_forget()
     local_nonpersistent_flags+=("--help")
     flags+=("--cacert=")
     flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
     flags+=("--json")
     flags+=("--limit-download=")
     flags+=("--limit-upload=")
@@ -561,6 +607,7 @@ _restic_generate()
     local_nonpersistent_flags+=("--zsh-completion=")
     flags+=("--cacert=")
     flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
     flags+=("--json")
     flags+=("--limit-download=")
     flags+=("--limit-upload=")
@@ -596,6 +643,7 @@ _restic_init()
     local_nonpersistent_flags+=("--help")
     flags+=("--cacert=")
     flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
     flags+=("--json")
     flags+=("--limit-download=")
     flags+=("--limit-upload=")
@@ -631,6 +679,7 @@ _restic_key()
     local_nonpersistent_flags+=("--help")
     flags+=("--cacert=")
     flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
     flags+=("--json")
     flags+=("--limit-download=")
     flags+=("--limit-upload=")
@@ -666,6 +715,7 @@ _restic_list()
     local_nonpersistent_flags+=("--help")
     flags+=("--cacert=")
     flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
     flags+=("--json")
     flags+=("--limit-download=")
     flags+=("--limit-upload=")
@@ -711,6 +761,7 @@ _restic_ls()
     local_nonpersistent_flags+=("--tag=")
     flags+=("--cacert=")
     flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
     flags+=("--json")
     flags+=("--limit-download=")
     flags+=("--limit-upload=")
@@ -749,6 +800,7 @@ _restic_migrate()
     local_nonpersistent_flags+=("--help")
     flags+=("--cacert=")
     flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
     flags+=("--json")
     flags+=("--limit-download=")
     flags+=("--limit-upload=")
@@ -797,6 +849,7 @@ _restic_mount()
     local_nonpersistent_flags+=("--tag=")
     flags+=("--cacert=")
     flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
     flags+=("--json")
     flags+=("--limit-download=")
     flags+=("--limit-upload=")
@@ -832,6 +885,7 @@ _restic_prune()
     local_nonpersistent_flags+=("--help")
     flags+=("--cacert=")
     flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
     flags+=("--json")
     flags+=("--limit-download=")
     flags+=("--limit-upload=")
@@ -867,6 +921,7 @@ _restic_rebuild-index()
     local_nonpersistent_flags+=("--help")
     flags+=("--cacert=")
     flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
     flags+=("--json")
     flags+=("--limit-download=")
     flags+=("--limit-upload=")
@@ -918,6 +973,7 @@ _restic_restore()
     local_nonpersistent_flags+=("--target=")
     flags+=("--cacert=")
     flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
     flags+=("--json")
     flags+=("--limit-download=")
     flags+=("--limit-upload=")
@@ -965,6 +1021,7 @@ _restic_snapshots()
     local_nonpersistent_flags+=("--tag=")
     flags+=("--cacert=")
     flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
     flags+=("--json")
     flags+=("--limit-download=")
     flags+=("--limit-upload=")
@@ -1013,6 +1070,7 @@ _restic_tag()
     local_nonpersistent_flags+=("--tag=")
     flags+=("--cacert=")
     flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
     flags+=("--json")
     flags+=("--limit-download=")
     flags+=("--limit-upload=")
@@ -1050,6 +1108,7 @@ _restic_unlock()
     local_nonpersistent_flags+=("--remove-all")
     flags+=("--cacert=")
     flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
     flags+=("--json")
     flags+=("--limit-download=")
     flags+=("--limit-upload=")
@@ -1085,6 +1144,7 @@ _restic_version()
     local_nonpersistent_flags+=("--help")
     flags+=("--cacert=")
     flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
     flags+=("--json")
     flags+=("--limit-download=")
     flags+=("--limit-upload=")
@@ -1111,6 +1171,7 @@ _restic()
     commands+=("backup")
     commands+=("cat")
     commands+=("check")
+    commands+=("diff")
     commands+=("dump")
     commands+=("find")
     commands+=("forget")
@@ -1137,6 +1198,7 @@ _restic()
 
     flags+=("--cacert=")
     flags+=("--cache-dir=")
+    flags+=("--cleanup-cache")
     flags+=("--help")
     flags+=("-h")
     local_nonpersistent_flags+=("--help")
diff --git a/doc/man/restic-backup.1 b/doc/man/restic-backup.1
index 4143ccbbc..82931284b 100644
--- a/doc/man/restic-backup.1
+++ b/doc/man/restic-backup.1
@@ -76,6 +76,10 @@ given as the arguments.
 \fB\-\-time\fP=""
     time of the backup (ex. '2012\-11\-01 22:08:41') (default: now)
 
+.PP
+\fB\-\-with\-atime\fP[=false]
+    store the atime for all files and directories
+
 
 .SH OPTIONS INHERITED FROM PARENT COMMANDS
 .PP
@@ -86,6 +90,10 @@ given as the arguments.
 \fB\-\-cache\-dir\fP=""
     set the cache directory
 
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
 .PP
 \fB\-\-json\fP[=false]
     set output mode to JSON for commands that support it
diff --git a/doc/man/restic-cat.1 b/doc/man/restic-cat.1
index 4bfced166..9c5ba1f6e 100644
--- a/doc/man/restic-cat.1
+++ b/doc/man/restic-cat.1
@@ -33,6 +33,10 @@ The "cat" command is used to print internal objects to stdout.
 \fB\-\-cache\-dir\fP=""
     set the cache directory
 
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
 .PP
 \fB\-\-json\fP[=false]
     set output mode to JSON for commands that support it
diff --git a/doc/man/restic-check.1 b/doc/man/restic-check.1
index 6bcf174af..fc05cd890 100644
--- a/doc/man/restic-check.1
+++ b/doc/man/restic-check.1
@@ -50,6 +50,10 @@ repository and not use a local cache.
 \fB\-\-cache\-dir\fP=""
     set the cache directory
 
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
 .PP
 \fB\-\-json\fP[=false]
     set output mode to JSON for commands that support it
diff --git a/doc/man/restic-diff.1 b/doc/man/restic-diff.1
new file mode 100644
index 000000000..c0e6e80f7
--- /dev/null
+++ b/doc/man/restic-diff.1
@@ -0,0 +1,92 @@
+.TH "restic backup" "1" "Jan 2017" "generated by `restic generate`" "" 
+.nh
+.ad l
+
+
+.SH NAME
+.PP
+restic\-diff \- Show differences between two snapshots
+
+
+.SH SYNOPSIS
+.PP
+\fBrestic diff snapshot\-ID snapshot\-ID [flags]\fP
+
+
+.SH DESCRIPTION
+.PP
+The "diff" command shows differences from the first to the second snapshot. The
+first characters in each line display what has happened to a particular file or
+directory:
+.IP \(bu 2
+The item was added
+.IP \(bu 2
+The item was removed
+U  The metadata (access mode, timestamps, ...) for the item was updated
+M  The file's content was modified
+T  The type was changed, e.g. a file was made a symlink
+
+
+.SH OPTIONS
+.PP
+\fB\-h\fP, \fB\-\-help\fP[=false]
+    help for diff
+
+.PP
+\fB\-\-metadata\fP[=false]
+    print changes in metadata
+
+
+.SH OPTIONS INHERITED FROM PARENT COMMANDS
+.PP
+\fB\-\-cacert\fP=[]
+    path to load root certificates from (default: use system certificates)
+
+.PP
+\fB\-\-cache\-dir\fP=""
+    set the cache directory
+
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
+.PP
+\fB\-\-json\fP[=false]
+    set output mode to JSON for commands that support it
+
+.PP
+\fB\-\-limit\-download\fP=0
+    limits downloads to a maximum rate in KiB/s. (default: unlimited)
+
+.PP
+\fB\-\-limit\-upload\fP=0
+    limits uploads to a maximum rate in KiB/s. (default: unlimited)
+
+.PP
+\fB\-\-no\-cache\fP[=false]
+    do not use a local cache
+
+.PP
+\fB\-\-no\-lock\fP[=false]
+    do not lock the repo, this allows some operations on read\-only repos
+
+.PP
+\fB\-o\fP, \fB\-\-option\fP=[]
+    set extended option (\fB\fCkey=value\fR, can be specified multiple times)
+
+.PP
+\fB\-p\fP, \fB\-\-password\-file\fP=""
+    read the repository password from a file (default: $RESTIC\_PASSWORD\_FILE)
+
+.PP
+\fB\-q\fP, \fB\-\-quiet\fP[=false]
+    do not output comprehensive progress report
+
+.PP
+\fB\-r\fP, \fB\-\-repo\fP=""
+    repository to backup to or restore from (default: $RESTIC\_REPOSITORY)
+
+
+.SH SEE ALSO
+.PP
+\fBrestic(1)\fP
diff --git a/doc/man/restic-dump.1 b/doc/man/restic-dump.1
index 0eac63edd..9877c4d29 100644
--- a/doc/man/restic-dump.1
+++ b/doc/man/restic-dump.1
@@ -50,6 +50,10 @@ repository.
 \fB\-\-cache\-dir\fP=""
     set the cache directory
 
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
 .PP
 \fB\-\-json\fP[=false]
     set output mode to JSON for commands that support it
diff --git a/doc/man/restic-find.1 b/doc/man/restic-find.1
index f838ce41f..691ffdc84 100644
--- a/doc/man/restic-find.1
+++ b/doc/man/restic-find.1
@@ -66,6 +66,10 @@ repo.
 \fB\-\-cache\-dir\fP=""
     set the cache directory
 
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
 .PP
 \fB\-\-json\fP[=false]
     set output mode to JSON for commands that support it
diff --git a/doc/man/restic-forget.1 b/doc/man/restic-forget.1
index d2a6dd352..b0a6a4b95 100644
--- a/doc/man/restic-forget.1
+++ b/doc/man/restic-forget.1
@@ -96,6 +96,10 @@ data after 'forget' was run successfully, see the 'prune' command.
 \fB\-\-cache\-dir\fP=""
     set the cache directory
 
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
 .PP
 \fB\-\-json\fP[=false]
     set output mode to JSON for commands that support it
diff --git a/doc/man/restic-generate.1 b/doc/man/restic-generate.1
index 6f7227df8..5e8fc4739 100644
--- a/doc/man/restic-generate.1
+++ b/doc/man/restic-generate.1
@@ -46,6 +46,10 @@ and the auto\-completion files for bash and zsh).
 \fB\-\-cache\-dir\fP=""
     set the cache directory
 
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
 .PP
 \fB\-\-json\fP[=false]
     set output mode to JSON for commands that support it
diff --git a/doc/man/restic-init.1 b/doc/man/restic-init.1
index a89ccaaa5..704052f3e 100644
--- a/doc/man/restic-init.1
+++ b/doc/man/restic-init.1
@@ -33,6 +33,10 @@ The "init" command initializes a new repository.
 \fB\-\-cache\-dir\fP=""
     set the cache directory
 
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
 .PP
 \fB\-\-json\fP[=false]
     set output mode to JSON for commands that support it
diff --git a/doc/man/restic-key.1 b/doc/man/restic-key.1
index bf1515113..8e8b51627 100644
--- a/doc/man/restic-key.1
+++ b/doc/man/restic-key.1
@@ -33,6 +33,10 @@ The "key" command manages keys (passwords) for accessing the repository.
 \fB\-\-cache\-dir\fP=""
     set the cache directory
 
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
 .PP
 \fB\-\-json\fP[=false]
     set output mode to JSON for commands that support it
diff --git a/doc/man/restic-list.1 b/doc/man/restic-list.1
index faf77939a..55500c461 100644
--- a/doc/man/restic-list.1
+++ b/doc/man/restic-list.1
@@ -33,6 +33,10 @@ The "list" command allows listing objects in the repository based on type.
 \fB\-\-cache\-dir\fP=""
     set the cache directory
 
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
 .PP
 \fB\-\-json\fP[=false]
     set output mode to JSON for commands that support it
diff --git a/doc/man/restic-ls.1 b/doc/man/restic-ls.1
index b5bf14b05..12c91d6ca 100644
--- a/doc/man/restic-ls.1
+++ b/doc/man/restic-ls.1
@@ -52,6 +52,10 @@ The special snapshot\-ID "latest" can be used to list files and directories of t
 \fB\-\-cache\-dir\fP=""
     set the cache directory
 
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
 .PP
 \fB\-\-json\fP[=false]
     set output mode to JSON for commands that support it
diff --git a/doc/man/restic-migrate.1 b/doc/man/restic-migrate.1
index 37e7002be..40458c362 100644
--- a/doc/man/restic-migrate.1
+++ b/doc/man/restic-migrate.1
@@ -38,6 +38,10 @@ name is explicitly given, a list of migrations that can be applied is printed.
 \fB\-\-cache\-dir\fP=""
     set the cache directory
 
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
 .PP
 \fB\-\-json\fP[=false]
     set output mode to JSON for commands that support it
diff --git a/doc/man/restic-mount.1 b/doc/man/restic-mount.1
index 31f939031..33d7714ba 100644
--- a/doc/man/restic-mount.1
+++ b/doc/man/restic-mount.1
@@ -58,6 +58,10 @@ read\-only mount.
 \fB\-\-cache\-dir\fP=""
     set the cache directory
 
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
 .PP
 \fB\-\-json\fP[=false]
     set output mode to JSON for commands that support it
diff --git a/doc/man/restic-prune.1 b/doc/man/restic-prune.1
index ccecbf2d7..8379852b9 100644
--- a/doc/man/restic-prune.1
+++ b/doc/man/restic-prune.1
@@ -34,6 +34,10 @@ referenced and therefore not needed any more.
 \fB\-\-cache\-dir\fP=""
     set the cache directory
 
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
 .PP
 \fB\-\-json\fP[=false]
     set output mode to JSON for commands that support it
diff --git a/doc/man/restic-rebuild-index.1 b/doc/man/restic-rebuild-index.1
index c0782976f..0c8d484c2 100644
--- a/doc/man/restic-rebuild-index.1
+++ b/doc/man/restic-rebuild-index.1
@@ -34,6 +34,10 @@ repository.
 \fB\-\-cache\-dir\fP=""
     set the cache directory
 
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
 .PP
 \fB\-\-json\fP[=false]
     set output mode to JSON for commands that support it
diff --git a/doc/man/restic-restore.1 b/doc/man/restic-restore.1
index 0a764cfb8..8c554eeaa 100644
--- a/doc/man/restic-restore.1
+++ b/doc/man/restic-restore.1
@@ -62,6 +62,10 @@ repository.
 \fB\-\-cache\-dir\fP=""
     set the cache directory
 
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
 .PP
 \fB\-\-json\fP[=false]
     set output mode to JSON for commands that support it
diff --git a/doc/man/restic-snapshots.1 b/doc/man/restic-snapshots.1
index 7f45e87d4..a858dab2f 100644
--- a/doc/man/restic-snapshots.1
+++ b/doc/man/restic-snapshots.1
@@ -53,6 +53,10 @@ The "snapshots" command lists all snapshots stored in the repository.
 \fB\-\-cache\-dir\fP=""
     set the cache directory
 
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
 .PP
 \fB\-\-json\fP[=false]
     set output mode to JSON for commands that support it
diff --git a/doc/man/restic-tag.1 b/doc/man/restic-tag.1
index 0d830a656..0d45c82bf 100644
--- a/doc/man/restic-tag.1
+++ b/doc/man/restic-tag.1
@@ -64,6 +64,10 @@ When no snapshot\-ID is given, all snapshots matching the host, tag and path fil
 \fB\-\-cache\-dir\fP=""
     set the cache directory
 
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
 .PP
 \fB\-\-json\fP[=false]
     set output mode to JSON for commands that support it
diff --git a/doc/man/restic-unlock.1 b/doc/man/restic-unlock.1
index 5b4642a53..9c7decbfa 100644
--- a/doc/man/restic-unlock.1
+++ b/doc/man/restic-unlock.1
@@ -37,6 +37,10 @@ The "unlock" command removes stale locks that have been created by other restic
 \fB\-\-cache\-dir\fP=""
     set the cache directory
 
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
 .PP
 \fB\-\-json\fP[=false]
     set output mode to JSON for commands that support it
diff --git a/doc/man/restic-version.1 b/doc/man/restic-version.1
index 37315d319..fb6ec9172 100644
--- a/doc/man/restic-version.1
+++ b/doc/man/restic-version.1
@@ -34,6 +34,10 @@ and the version of this software.
 \fB\-\-cache\-dir\fP=""
     set the cache directory
 
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
 .PP
 \fB\-\-json\fP[=false]
     set output mode to JSON for commands that support it
diff --git a/doc/man/restic.1 b/doc/man/restic.1
index 13ae86757..bb238d3da 100644
--- a/doc/man/restic.1
+++ b/doc/man/restic.1
@@ -28,6 +28,10 @@ directories in an encrypted repository stored on different backends.
 \fB\-\-cache\-dir\fP=""
     set the cache directory
 
+.PP
+\fB\-\-cleanup\-cache\fP[=false]
+    auto remove old cache directories
+
 .PP
 \fB\-h\fP, \fB\-\-help\fP[=false]
     help for restic
@@ -71,4 +75,4 @@ directories in an encrypted repository stored on different backends.
 
 .SH SEE ALSO
 .PP
-\fBrestic\-backup(1)\fP, \fBrestic\-cat(1)\fP, \fBrestic\-check(1)\fP, \fBrestic\-dump(1)\fP, \fBrestic\-find(1)\fP, \fBrestic\-forget(1)\fP, \fBrestic\-generate(1)\fP, \fBrestic\-init(1)\fP, \fBrestic\-key(1)\fP, \fBrestic\-list(1)\fP, \fBrestic\-ls(1)\fP, \fBrestic\-migrate(1)\fP, \fBrestic\-mount(1)\fP, \fBrestic\-prune(1)\fP, \fBrestic\-rebuild\-index(1)\fP, \fBrestic\-restore(1)\fP, \fBrestic\-snapshots(1)\fP, \fBrestic\-tag(1)\fP, \fBrestic\-unlock(1)\fP, \fBrestic\-version(1)\fP
+\fBrestic\-backup(1)\fP, \fBrestic\-cat(1)\fP, \fBrestic\-check(1)\fP, \fBrestic\-diff(1)\fP, \fBrestic\-dump(1)\fP, \fBrestic\-find(1)\fP, \fBrestic\-forget(1)\fP, \fBrestic\-generate(1)\fP, \fBrestic\-init(1)\fP, \fBrestic\-key(1)\fP, \fBrestic\-list(1)\fP, \fBrestic\-ls(1)\fP, \fBrestic\-migrate(1)\fP, \fBrestic\-mount(1)\fP, \fBrestic\-prune(1)\fP, \fBrestic\-rebuild\-index(1)\fP, \fBrestic\-restore(1)\fP, \fBrestic\-snapshots(1)\fP, \fBrestic\-tag(1)\fP, \fBrestic\-unlock(1)\fP, \fBrestic\-version(1)\fP
diff --git a/doc/zsh-completion.zsh b/doc/zsh-completion.zsh
index a21f28ccf..cd979180d 100644
--- a/doc/zsh-completion.zsh
+++ b/doc/zsh-completion.zsh
@@ -7,7 +7,7 @@ case $state in
   level1)
     case $words[1] in
       restic)
-        _arguments '1: :(backup cat check dump find forget generate help init key list ls migrate mount options prune rebuild-index restore snapshots tag unlock version)'
+        _arguments '1: :(backup cat check diff dump find forget generate help init key list ls migrate mount options prune rebuild-index restore snapshots tag unlock version)'
       ;;
       *)
         _arguments '*: :_files'