diff --git a/completions/_dust b/completions/_dust
index 8903200..6555352 100644
--- a/completions/_dust
+++ b/completions/_dust
@@ -28,12 +28,12 @@ _dust() {
 '--ignore-all-in-file=[Exclude any file or directory with a regex matching that listed in this file, the file entries will be added to the ignore regexs provided by --invert_filter]:FILE:_files' \
 '-z+[Minimum size file to include in output]:MIN_SIZE:_default' \
 '--min-size=[Minimum size file to include in output]:MIN_SIZE:_default' \
-'(-e --filter -t --file_types)*-v+[Exclude filepaths matching this regex. To ignore png files type\: -v "\\.png\$" ]:REGEX:_default' \
-'(-e --filter -t --file_types)*--invert-filter=[Exclude filepaths matching this regex. To ignore png files type\: -v "\\.png\$" ]:REGEX:_default' \
-'(-t --file_types)*-e+[Only include filepaths matching this regex. For png files type\: -e "\\.png\$" ]:REGEX:_default' \
-'(-t --file_types)*--filter=[Only include filepaths matching this regex. For png files type\: -e "\\.png\$" ]:REGEX:_default' \
+'(-e --filter -t --file-types)*-v+[Exclude filepaths matching this regex. To ignore png files type\: -v "\\.png\$" ]:REGEX:_default' \
+'(-e --filter -t --file-types)*--invert-filter=[Exclude filepaths matching this regex. To ignore png files type\: -v "\\.png\$" ]:REGEX:_default' \
+'(-t --file-types)*-e+[Only include filepaths matching this regex. For png files type\: -e "\\.png\$" ]:REGEX:_default' \
+'(-t --file-types)*--filter=[Only include filepaths matching this regex. For png files type\: -e "\\.png\$" ]:REGEX:_default' \
 '-w+[Specify width of output overriding the auto detection of terminal width]:WIDTH:_default' \
-'--terminal_width=[Specify width of output overriding the auto detection of terminal width]:WIDTH:_default' \
+'--terminal-width=[Specify width of output overriding the auto detection of terminal width]:WIDTH:_default' \
 '-o+[Changes output display size. si will print sizes in powers of 1000. b k m g t kb mb gb tb will print the whole tree in that size.]:FORMAT:(si b k m g t kb mb gb tb)' \
 '--output-format=[Changes output display size. si will print sizes in powers of 1000. b k m g t kb mb gb tb will print the whole tree in that size.]:FORMAT:(si b k m g t kb mb gb tb)' \
 '-S+[Specify memory to use as stack size - use if you see\: '\''fatal runtime error\: stack overflow'\'' (default low memory=1048576, high memory=1073741824)]:STACK_SIZE:_default' \
@@ -72,14 +72,14 @@ _dust() {
 '-f[Directory '\''size'\'' is number of child files instead of disk size]' \
 '--filecount[Directory '\''size'\'' is number of child files instead of disk size]' \
 '-i[Do not display hidden files]' \
-'--ignore_hidden[Do not display hidden files]' \
+'--ignore-hidden[Do not display hidden files]' \
 '(-d --depth -D --only-dir)-t[show only these file types]' \
-'(-d --depth -D --only-dir)--file_types[show only these file types]' \
+'(-d --depth -D --only-dir)--file-types[show only these file types]' \
 '-P[Disable the progress indication.]' \
 '--no-progress[Disable the progress indication.]' \
 '--print-errors[Print path with errors.]' \
-'(-F --only-file -t --file_types)-D[Only directories will be displayed.]' \
-'(-F --only-file -t --file_types)--only-dir[Only directories will be displayed.]' \
+'(-F --only-file -t --file-types)-D[Only directories will be displayed.]' \
+'(-F --only-file -t --file-types)--only-dir[Only directories will be displayed.]' \
 '(-D --only-dir)-F[Only files will be displayed. (Finds your largest files)]' \
 '(-D --only-dir)--only-file[Only files will be displayed. (Finds your largest files)]' \
 '-j[Output the directory tree as json to the current directory]' \
diff --git a/completions/_dust.ps1 b/completions/_dust.ps1
index d7ea1b0..71030cb 100644
--- a/completions/_dust.ps1
+++ b/completions/_dust.ps1
@@ -39,7 +39,7 @@ Register-ArgumentCompleter -Native -CommandName 'dust' -ScriptBlock {
             [CompletionResult]::new('-e', '-e', [CompletionResultType]::ParameterName, 'Only include filepaths matching this regex. For png files type: -e "\.png$" ')
             [CompletionResult]::new('--filter', '--filter', [CompletionResultType]::ParameterName, 'Only include filepaths matching this regex. For png files type: -e "\.png$" ')
             [CompletionResult]::new('-w', '-w', [CompletionResultType]::ParameterName, 'Specify width of output overriding the auto detection of terminal width')
-            [CompletionResult]::new('--terminal_width', '--terminal_width', [CompletionResultType]::ParameterName, 'Specify width of output overriding the auto detection of terminal width')
+            [CompletionResult]::new('--terminal-width', '--terminal-width', [CompletionResultType]::ParameterName, 'Specify width of output overriding the auto detection of terminal width')
             [CompletionResult]::new('-o', '-o', [CompletionResultType]::ParameterName, 'Changes output display size. si will print sizes in powers of 1000. b k m g t kb mb gb tb will print the whole tree in that size.')
             [CompletionResult]::new('--output-format', '--output-format', [CompletionResultType]::ParameterName, 'Changes output display size. si will print sizes in powers of 1000. b k m g t kb mb gb tb will print the whole tree in that size.')
             [CompletionResult]::new('-S', '-S ', [CompletionResultType]::ParameterName, 'Specify memory to use as stack size - use if you see: ''fatal runtime error: stack overflow'' (default low memory=1048576, high memory=1073741824)')
@@ -78,9 +78,9 @@ Register-ArgumentCompleter -Native -CommandName 'dust' -ScriptBlock {
             [CompletionResult]::new('-f', '-f', [CompletionResultType]::ParameterName, 'Directory ''size'' is number of child files instead of disk size')
             [CompletionResult]::new('--filecount', '--filecount', [CompletionResultType]::ParameterName, 'Directory ''size'' is number of child files instead of disk size')
             [CompletionResult]::new('-i', '-i', [CompletionResultType]::ParameterName, 'Do not display hidden files')
-            [CompletionResult]::new('--ignore_hidden', '--ignore_hidden', [CompletionResultType]::ParameterName, 'Do not display hidden files')
+            [CompletionResult]::new('--ignore-hidden', '--ignore-hidden', [CompletionResultType]::ParameterName, 'Do not display hidden files')
             [CompletionResult]::new('-t', '-t', [CompletionResultType]::ParameterName, 'show only these file types')
-            [CompletionResult]::new('--file_types', '--file_types', [CompletionResultType]::ParameterName, 'show only these file types')
+            [CompletionResult]::new('--file-types', '--file-types', [CompletionResultType]::ParameterName, 'show only these file types')
             [CompletionResult]::new('-P', '-P ', [CompletionResultType]::ParameterName, 'Disable the progress indication.')
             [CompletionResult]::new('--no-progress', '--no-progress', [CompletionResultType]::ParameterName, 'Disable the progress indication.')
             [CompletionResult]::new('--print-errors', '--print-errors', [CompletionResultType]::ParameterName, 'Print path with errors.')
diff --git a/completions/dust.bash b/completions/dust.bash
index 2bb6321..bddca5d 100644
--- a/completions/dust.bash
+++ b/completions/dust.bash
@@ -19,7 +19,7 @@ _dust() {
 
     case "${cmd}" in
         dust)
-            opts="-d -T -n -p -X -I -L -x -s -r -c -C -b -B -z -R -f -i -v -e -t -w -P -D -F -o -S -j -M -A -y -m -h -V --depth --threads --config --number-of-lines --full-paths --ignore-directory --ignore-all-in-file --dereference-links --limit-filesystem --apparent-size --reverse --no-colors --force-colors --no-percent-bars --bars-on-right --min-size --screen-reader --skip-total --filecount --ignore_hidden --invert-filter --filter --file_types --terminal_width --no-progress --print-errors --only-dir --only-file --output-format --stack-size --output-json --mtime --atime --ctime --files0-from --collapse --filetime --help --version [PATH]..."
+            opts="-d -T -n -p -X -I -L -x -s -r -c -C -b -B -z -R -f -i -v -e -t -w -P -D -F -o -S -j -M -A -y -m -h -V --depth --threads --config --number-of-lines --full-paths --ignore-directory --ignore-all-in-file --dereference-links --limit-filesystem --apparent-size --reverse --no-colors --force-colors --no-percent-bars --bars-on-right --min-size --screen-reader --skip-total --filecount --ignore-hidden --invert-filter --filter --file-types --terminal-width --no-progress --print-errors --only-dir --only-file --output-format --stack-size --output-json --mtime --atime --ctime --files0-from --collapse --filetime --help --version [PATH]..."
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 1 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -126,7 +126,7 @@ _dust() {
                     COMPREPLY=($(compgen -f "${cur}"))
                     return 0
                     ;;
-                --terminal_width)
+                --terminal-width)
                     COMPREPLY=($(compgen -f "${cur}"))
                     return 0
                     ;;
diff --git a/completions/dust.elv b/completions/dust.elv
index d39054b..0c81f15 100644
--- a/completions/dust.elv
+++ b/completions/dust.elv
@@ -36,7 +36,7 @@ set edit:completion:arg-completer[dust] = {|@words|
             cand -e 'Only include filepaths matching this regex. For png files type: -e "\.png$" '
             cand --filter 'Only include filepaths matching this regex. For png files type: -e "\.png$" '
             cand -w 'Specify width of output overriding the auto detection of terminal width'
-            cand --terminal_width 'Specify width of output overriding the auto detection of terminal width'
+            cand --terminal-width 'Specify width of output overriding the auto detection of terminal width'
             cand -o 'Changes output display size. si will print sizes in powers of 1000. b k m g t kb mb gb tb will print the whole tree in that size.'
             cand --output-format 'Changes output display size. si will print sizes in powers of 1000. b k m g t kb mb gb tb will print the whole tree in that size.'
             cand -S 'Specify memory to use as stack size - use if you see: ''fatal runtime error: stack overflow'' (default low memory=1048576, high memory=1073741824)'
@@ -75,9 +75,9 @@ set edit:completion:arg-completer[dust] = {|@words|
             cand -f 'Directory ''size'' is number of child files instead of disk size'
             cand --filecount 'Directory ''size'' is number of child files instead of disk size'
             cand -i 'Do not display hidden files'
-            cand --ignore_hidden 'Do not display hidden files'
+            cand --ignore-hidden 'Do not display hidden files'
             cand -t 'show only these file types'
-            cand --file_types 'show only these file types'
+            cand --file-types 'show only these file types'
             cand -P 'Disable the progress indication.'
             cand --no-progress 'Disable the progress indication.'
             cand --print-errors 'Print path with errors.'
diff --git a/completions/dust.fish b/completions/dust.fish
index e78e21a..ba8dcf9 100644
--- a/completions/dust.fish
+++ b/completions/dust.fish
@@ -7,7 +7,7 @@ complete -c dust -s I -l ignore-all-in-file -d 'Exclude any file or directory wi
 complete -c dust -s z -l min-size -d 'Minimum size file to include in output' -r
 complete -c dust -s v -l invert-filter -d 'Exclude filepaths matching this regex. To ignore png files type: -v "\\.png$" ' -r
 complete -c dust -s e -l filter -d 'Only include filepaths matching this regex. For png files type: -e "\\.png$" ' -r
-complete -c dust -s w -l terminal_width -d 'Specify width of output overriding the auto detection of terminal width' -r
+complete -c dust -s w -l terminal-width -d 'Specify width of output overriding the auto detection of terminal width' -r
 complete -c dust -s o -l output-format -d 'Changes output display size. si will print sizes in powers of 1000. b k m g t kb mb gb tb will print the whole tree in that size.' -r -f -a "si\t''
 b\t''
 k\t''
@@ -39,8 +39,8 @@ complete -c dust -s B -l bars-on-right -d 'percent bars moved to right side of s
 complete -c dust -s R -l screen-reader -d 'For screen readers. Removes bars. Adds new column: depth level (May want to use -p too for full path)'
 complete -c dust -l skip-total -d 'No total row will be displayed'
 complete -c dust -s f -l filecount -d 'Directory \'size\' is number of child files instead of disk size'
-complete -c dust -s i -l ignore_hidden -d 'Do not display hidden files'
-complete -c dust -s t -l file_types -d 'show only these file types'
+complete -c dust -s i -l ignore-hidden -d 'Do not display hidden files'
+complete -c dust -s t -l file-types -d 'show only these file types'
 complete -c dust -s P -l no-progress -d 'Disable the progress indication.'
 complete -c dust -l print-errors -d 'Print path with errors.'
 complete -c dust -s D -l only-dir -d 'Only directories will be displayed.'
diff --git a/man-page/dust.1 b/man-page/dust.1
index bd76c04..3296323 100644
--- a/man-page/dust.1
+++ b/man-page/dust.1
@@ -4,7 +4,7 @@
 .SH NAME
 Dust \- Like du but more intuitive
 .SH SYNOPSIS
-\fBdust\fR [\fB\-d\fR|\fB\-\-depth\fR] [\fB\-T\fR|\fB\-\-threads\fR] [\fB\-\-config\fR] [\fB\-n\fR|\fB\-\-number\-of\-lines\fR] [\fB\-p\fR|\fB\-\-full\-paths\fR] [\fB\-X\fR|\fB\-\-ignore\-directory\fR] [\fB\-I\fR|\fB\-\-ignore\-all\-in\-file\fR] [\fB\-L\fR|\fB\-\-dereference\-links\fR] [\fB\-x\fR|\fB\-\-limit\-filesystem\fR] [\fB\-s\fR|\fB\-\-apparent\-size\fR] [\fB\-r\fR|\fB\-\-reverse\fR] [\fB\-c\fR|\fB\-\-no\-colors\fR] [\fB\-C\fR|\fB\-\-force\-colors\fR] [\fB\-b\fR|\fB\-\-no\-percent\-bars\fR] [\fB\-B\fR|\fB\-\-bars\-on\-right\fR] [\fB\-z\fR|\fB\-\-min\-size\fR] [\fB\-R\fR|\fB\-\-screen\-reader\fR] [\fB\-\-skip\-total\fR] [\fB\-f\fR|\fB\-\-filecount\fR] [\fB\-i\fR|\fB\-\-ignore_hidden\fR] [\fB\-v\fR|\fB\-\-invert\-filter\fR] [\fB\-e\fR|\fB\-\-filter\fR] [\fB\-t\fR|\fB\-\-file_types\fR] [\fB\-w\fR|\fB\-\-terminal_width\fR] [\fB\-P\fR|\fB\-\-no\-progress\fR] [\fB\-\-print\-errors\fR] [\fB\-D\fR|\fB\-\-only\-dir\fR] [\fB\-F\fR|\fB\-\-only\-file\fR] [\fB\-o\fR|\fB\-\-output\-format\fR] [\fB\-S\fR|\fB\-\-stack\-size\fR] [\fB\-j\fR|\fB\-\-output\-json\fR] [\fB\-M\fR|\fB\-\-mtime\fR] [\fB\-A\fR|\fB\-\-atime\fR] [\fB\-y\fR|\fB\-\-ctime\fR] [\fB\-\-files0\-from\fR] [\fB\-\-collapse\fR] [\fB\-m\fR|\fB\-\-filetime\fR] [\fB\-h\fR|\fB\-\-help\fR] [\fB\-V\fR|\fB\-\-version\fR] [\fIPATH\fR] 
+\fBdust\fR [\fB\-d\fR|\fB\-\-depth\fR] [\fB\-T\fR|\fB\-\-threads\fR] [\fB\-\-config\fR] [\fB\-n\fR|\fB\-\-number\-of\-lines\fR] [\fB\-p\fR|\fB\-\-full\-paths\fR] [\fB\-X\fR|\fB\-\-ignore\-directory\fR] [\fB\-I\fR|\fB\-\-ignore\-all\-in\-file\fR] [\fB\-L\fR|\fB\-\-dereference\-links\fR] [\fB\-x\fR|\fB\-\-limit\-filesystem\fR] [\fB\-s\fR|\fB\-\-apparent\-size\fR] [\fB\-r\fR|\fB\-\-reverse\fR] [\fB\-c\fR|\fB\-\-no\-colors\fR] [\fB\-C\fR|\fB\-\-force\-colors\fR] [\fB\-b\fR|\fB\-\-no\-percent\-bars\fR] [\fB\-B\fR|\fB\-\-bars\-on\-right\fR] [\fB\-z\fR|\fB\-\-min\-size\fR] [\fB\-R\fR|\fB\-\-screen\-reader\fR] [\fB\-\-skip\-total\fR] [\fB\-f\fR|\fB\-\-filecount\fR] [\fB\-i\fR|\fB\-\-ignore\-hidden\fR] [\fB\-v\fR|\fB\-\-invert\-filter\fR] [\fB\-e\fR|\fB\-\-filter\fR] [\fB\-t\fR|\fB\-\-file\-types\fR] [\fB\-w\fR|\fB\-\-terminal\-width\fR] [\fB\-P\fR|\fB\-\-no\-progress\fR] [\fB\-\-print\-errors\fR] [\fB\-D\fR|\fB\-\-only\-dir\fR] [\fB\-F\fR|\fB\-\-only\-file\fR] [\fB\-o\fR|\fB\-\-output\-format\fR] [\fB\-S\fR|\fB\-\-stack\-size\fR] [\fB\-j\fR|\fB\-\-output\-json\fR] [\fB\-M\fR|\fB\-\-mtime\fR] [\fB\-A\fR|\fB\-\-atime\fR] [\fB\-y\fR|\fB\-\-ctime\fR] [\fB\-\-files0\-from\fR] [\fB\-\-collapse\fR] [\fB\-m\fR|\fB\-\-filetime\fR] [\fB\-h\fR|\fB\-\-help\fR] [\fB\-V\fR|\fB\-\-version\fR] [\fIPATH\fR] 
 .SH DESCRIPTION
 Like du but more intuitive
 .SH OPTIONS
@@ -66,7 +66,7 @@ No total row will be displayed
 \fB\-f\fR, \fB\-\-filecount\fR
 Directory \*(Aqsize\*(Aq is number of child files instead of disk size
 .TP
-\fB\-i\fR, \fB\-\-ignore_hidden\fR
+\fB\-i\fR, \fB\-\-ignore\-hidden\fR
 Do not display hidden files
 .TP
 \fB\-v\fR, \fB\-\-invert\-filter\fR=\fIREGEX\fR
@@ -75,10 +75,10 @@ Exclude filepaths matching this regex. To ignore png files type: \-v "\\.png$"
 \fB\-e\fR, \fB\-\-filter\fR=\fIREGEX\fR
 Only include filepaths matching this regex. For png files type: \-e "\\.png$" 
 .TP
-\fB\-t\fR, \fB\-\-file_types\fR
+\fB\-t\fR, \fB\-\-file\-types\fR
 show only these file types
 .TP
-\fB\-w\fR, \fB\-\-terminal_width\fR=\fIWIDTH\fR
+\fB\-w\fR, \fB\-\-terminal\-width\fR=\fIWIDTH\fR
 Specify width of output overriding the auto detection of terminal width
 .TP
 \fB\-P\fR, \fB\-\-no\-progress\fR
diff --git a/src/cli.rs b/src/cli.rs
index 607c635..b3ba446 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -154,7 +154,7 @@ pub fn build_cli() -> Command {
         .arg(
             Arg::new("ignore_hidden")
                 .short('i') // Do not use 'h' this is used by 'help'
-                .long("ignore_hidden")
+                .long("ignore-hidden")
                 .action(clap::ArgAction::SetTrue)
                 .help("Do not display hidden files"),
         )
@@ -180,7 +180,7 @@ pub fn build_cli() -> Command {
         .arg(
             Arg::new("types")
                 .short('t')
-                .long("file_types")
+                .long("file-types")
                 .conflicts_with("depth")
                 .conflicts_with("only_dir")
                 .action(clap::ArgAction::SetTrue)
@@ -189,7 +189,7 @@ pub fn build_cli() -> Command {
         .arg(
             Arg::new("width")
                 .short('w')
-                .long("terminal_width")
+                .long("terminal-width")
                 .value_name("WIDTH")
                 .value_parser(value_parser!(usize))
                 .num_args(1)