diff --git a/runtime/syntax/cs.vim b/runtime/syntax/cs.vim
index eeb9902..3356416 100644
--- a/runtime/syntax/cs.vim
+++ b/runtime/syntax/cs.vim
@@ -3,7 +3,7 @@
 " Maintainer:          Nick Jensen <nickspoon@gmail.com>
 " Former Maintainers:  Anduin Withers <awithers@anduin.com>
 "                      Johannes Zellner <johannes@zellner.org>
-" Last Change:         2019-08-01
+" Last Change:         2020-01-27
 " Filenames:           *.cs
 " License:             Vim (see :h license)
 " Repository:          https://github.com/nickspoons/vim-cs
@@ -97,6 +97,8 @@
 syn include	@csXml syntax/xml.vim
 hi def link	xmlRegion Comment
 
+" Since syntax/xml.vim contains `syn spell toplevel`, we need to set it back to `default` here.
+syn spell default
 
 " [1] 9.5 Pre-processing directives
 syn region	csPreCondit	start="^\s*#\s*\(define\|undef\|if\|elif\|else\|endif\|line\|error\|warning\)" skip="\\$" end="$" contains=csComment keepend
diff --git a/runtime/syntax/debchangelog.vim b/runtime/syntax/debchangelog.vim
index eb82613..8d282da 100644
--- a/runtime/syntax/debchangelog.vim
+++ b/runtime/syntax/debchangelog.vim
@@ -3,7 +3,7 @@
 " Maintainer:  Debian Vim Maintainers
 " Former Maintainers: Gerfried Fuchs <alfie@ist.org>
 "                     Wichert Akkerman <wakkerma@debian.org>
-" Last Change: 2019 Oct 20
+" Last Change: 2020 Feb 02
 " URL: https://salsa.debian.org/vim-team/vim-debian/blob/master/syntax/debchangelog.vim
 
 " Standard syntax initialization
@@ -24,7 +24,7 @@
       \ 'wheezy', 'jessie', 'stretch', 'buster', 'bullseye', 'bookworm',
       \ 'sid', 'rc-buggy',
       \
-      \ 'trusty', 'xenial', 'bionic', 'disco', 'eoan', 'focal', 'devel'
+      \ 'trusty', 'xenial', 'bionic', 'eoan', 'focal', 'devel'
       \ ]
 let s:unsupported = [
       \ 'frozen', 'buzz', 'rex', 'bo', 'hamm', 'slink', 'potato',
@@ -33,7 +33,8 @@
       \ 'warty', 'hoary', 'breezy', 'dapper', 'edgy', 'feisty',
       \ 'gutsy', 'hardy', 'intrepid', 'jaunty', 'karmic', 'lucid',
       \ 'maverick', 'natty', 'oneiric', 'precise', 'quantal', 'raring', 'saucy',
-      \ 'utopic', 'vivid', 'wily', 'yakkety', 'zesty', 'artful', 'cosmic'
+      \ 'utopic', 'vivid', 'wily', 'yakkety', 'zesty', 'artful', 'cosmic',
+      \ 'disco'
       \ ]
 let &cpo=s:cpo
 
@@ -43,7 +44,7 @@
 exe 'syn match debchangelogOtherKV	contained ", \('.s:urgency.'\|'.s:binNMU.'\)"'
 exe 'syn match debchangelogTarget	contained "\%( \%('.join(s:supported, '\|').'\)\>[-[:alnum:]]*\)\+"'
 exe 'syn match debchangelogUnsupportedTarget	contained "\%( \%('.join(s:unsupported, '\|').'\)\>[-[:alnum:]]*\)\+"'
-syn keyword debchangelogUnreleased	contained UNRELEASED
+syn match debchangelogUnreleased	contained / UNRELEASED/
 syn match debchangelogVersion	contained "(.\{-})"
 syn match debchangelogCloses	contained "closes:\_s*\(bug\)\=#\=\_s\=\d\+\(,\_s*\(bug\)\=#\=\_s\=\d\+\)*"
 syn match debchangelogLP	contained "\clp:\s\+#\d\+\(,\s*#\d\+\)*"
diff --git a/runtime/syntax/debsources.vim b/runtime/syntax/debsources.vim
index 349b2ac..e97d327 100644
--- a/runtime/syntax/debsources.vim
+++ b/runtime/syntax/debsources.vim
@@ -2,7 +2,7 @@
 " Language:     Debian sources.list
 " Maintainer:   Debian Vim Maintainers
 " Former Maintainer: Matthijs Mohlmann <matthijs@cacholong.nl>
-" Last Change: 2019 Oct 18
+" Last Change: 2020 Feb 02
 " URL: https://salsa.debian.org/vim-team/vim-debian/blob/master/syntax/debsources.vim
 
 " Standard syntax initialization
@@ -26,7 +26,7 @@
       \ 'wheezy', 'jessie', 'stretch', 'buster', 'bullseye', 'bookworm',
       \ 'sid', 'rc-buggy',
       \
-      \ 'trusty', 'xenial', 'bionic', 'disco', 'eoan', 'focal', 'devel'
+      \ 'trusty', 'xenial', 'bionic', 'eoan', 'focal', 'devel'
       \ ]
 let s:unsupported = [
       \ 'buzz', 'rex', 'bo', 'hamm', 'slink', 'potato',
@@ -35,7 +35,8 @@
       \ 'warty', 'hoary', 'breezy', 'dapper', 'edgy', 'feisty',
       \ 'gutsy', 'hardy', 'intrepid', 'jaunty', 'karmic', 'lucid',
       \ 'maverick', 'natty', 'oneiric', 'precise', 'quantal', 'raring', 'saucy',
-      \ 'utopic', 'vivid', 'wily', 'yakkety', 'zesty', 'artful', 'cosmic'
+      \ 'utopic', 'vivid', 'wily', 'yakkety', 'zesty', 'artful', 'cosmic',
+      \ 'disco'
       \ ]
 let &cpo=s:cpo
 
diff --git a/runtime/syntax/dockerfile.vim b/runtime/syntax/dockerfile.vim
index 4cf50d9..da3a3fc 100644
--- a/runtime/syntax/dockerfile.vim
+++ b/runtime/syntax/dockerfile.vim
@@ -1,26 +1,45 @@
 " dockerfile.vim - Syntax highlighting for Dockerfiles
 " Maintainer:   Honza Pokorny <https://honza.ca>
-" Version:      0.6
-" Last Change:  2019 Aug 16
+" Last Change:  2020 Jan 27
 " License:      BSD
 
+" https://docs.docker.com/engine/reference/builder/
 
 if exists("b:current_syntax")
     finish
 endif
 
-let b:current_syntax = "dockerfile"
+syntax include @JSON syntax/json.vim
+unlet b:current_syntax
+
+syntax include @Shell syntax/sh.vim
+unlet b:current_syntax
 
 syntax case ignore
+syntax match dockerfileLinePrefix /\v^\s*(ONBUILD\s+)?\ze\S/ contains=dockerfileKeyword nextgroup=dockerfileInstruction skipwhite
+syntax region dockerfileFrom matchgroup=dockerfileKeyword start=/\v^\s*(FROM)\ze(\s|$)/ skip=/\v\\\_./ end=/\v((^|\s)AS(\s|$)|$)/ contains=dockerfileOption
 
-syntax match dockerfileKeyword /\v^\s*(ONBUILD\s+)?(ADD|ARG|CMD|COPY|ENTRYPOINT|ENV|EXPOSE|FROM|HEALTHCHECK|LABEL|MAINTAINER|RUN|SHELL|STOPSIGNAL|USER|VOLUME|WORKDIR)\s/
+syntax keyword dockerfileKeyword contained ADD ARG CMD COPY ENTRYPOINT ENV EXPOSE HEALTHCHECK LABEL MAINTAINER ONBUILD RUN SHELL STOPSIGNAL USER VOLUME WORKDIR
+syntax match dockerfileOption contained /\v(^|\s)\zs--\S+/
 
-syntax match dockerfileKeyword /\v(AS)/
+syntax match dockerfileInstruction contained /\v(\S+)(\s+--\S+)*/             contains=dockerfileKeyword,dockerfileOption skipwhite nextgroup=dockerfileValue
+syntax match dockerfileInstruction contained /\v(ADD|COPY)(\s+--\S+)*/        contains=dockerfileKeyword,dockerfileOption skipwhite nextgroup=dockerfileJSON
+syntax match dockerfileInstruction contained /\v(HEALTHCHECK)(\s+--\S+)*/     contains=dockerfileKeyword,dockerfileOption skipwhite nextgroup=dockerfileInstruction
+syntax match dockerfileInstruction contained /\v(CMD|ENTRYPOINT|RUN)/         contains=dockerfileKeyword skipwhite nextgroup=dockerfileShell
+syntax match dockerfileInstruction contained /\v(CMD|ENTRYPOINT|RUN)\ze\s+\[/ contains=dockerfileKeyword skipwhite nextgroup=dockerfileJSON
+syntax match dockerfileInstruction contained /\v(SHELL|VOLUME)/               contains=dockerfileKeyword skipwhite nextgroup=dockerfileJSON
 
-syntax region dockerfileString start=/\v"/ skip=/\v\\./ end=/\v"/
+syntax region dockerfileString contained start=/\v"/ skip=/\v\\./ end=/\v"/
+syntax region dockerfileJSON   contained keepend start=/\v\[/ skip=/\v\\\_./ end=/\v$/ contains=@JSON
+syntax region dockerfileShell  contained keepend start=/\v/ skip=/\v\\\_./ end=/\v$/ contains=@Shell
+syntax region dockerfileValue  contained keepend start=/\v/ skip=/\v\\\_./ end=/\v$/ contains=dockerfileString
 
-syntax match dockerfileComment "\v^\s*#.*$"
+syntax region dockerfileComment start=/\v^\s*#/ end=/\v$/
+set commentstring=#\ %s
 
 hi def link dockerfileString String
 hi def link dockerfileKeyword Keyword
 hi def link dockerfileComment Comment
+hi def link dockerfileOption Special
+
+let b:current_syntax = "dockerfile"
diff --git a/runtime/syntax/fortran.vim b/runtime/syntax/fortran.vim
index 5623823..019a0bf 100644
--- a/runtime/syntax/fortran.vim
+++ b/runtime/syntax/fortran.vim
@@ -1,7 +1,7 @@
 " Vim syntax file
 " Language:	Fortran 2008 (and older: Fortran 2003, 95, 90, and 77)
-" Version:	101
-" Last Change:	2019 Nov. 26
+" Version:	102
+" Last Change:	2019 Dec. 14
 " Maintainer:	Ajit J. Thakkar <ajit@unb.ca>; <http://www2.unb.ca/~ajit/>
 " Usage:	For instructions, do :help fortran-syntax from Vim
 " Credits:
@@ -185,8 +185,8 @@
 if exists("fortran_more_precise")
   " Numbers as targets
   syn match fortranTarget	display	"\(\<if\s*(.\+)\s*\)\@<=\(\d\+\s*,\s*\)\{2}\d\+\>"
-  syn match fortranTarget	display	"\(\<do\s\+\)\@<11=\d\+\>"
-  syn match fortranTarget	display	"\(\<go\s*to\s*(\=\)\@<11=\(\d\+\s*,\s*\)*\d\+\>"
+  syn match fortranTarget	display	"\(\<do\s\+\)\@11<=\d\+\>"
+  syn match fortranTarget	display	"\(\<go\s*to\s*(\=\)\@11<=\(\d\+\s*,\s*\)*\d\+\>"
 endif
 
 syn keyword fortranTypeR	external
@@ -274,7 +274,7 @@
 syn match fortranType			"\<pure\>"
 syn match fortranType			"\<impure\>"
 if exists("fortran_more_precise")
-  syn match fortranConstructName "\(\<end\s*forall\s\+\)\@<15=\a\w*\>"
+  syn match fortranConstructName "\(\<end\s*forall\s\+\)\@15<=\a\w*\>"
 endif
 
 if b:fortran_dialect == "f08"