diff --git a/config/nvim/after/ftplugin/plantuml.lua b/config/nvim/after/ftplugin/plantuml.lua
new file mode 100644
index 0000000..924cf6b
--- /dev/null
+++ b/config/nvim/after/ftplugin/plantuml.lua
@@ -0,0 +1,2 @@
+vim.bo.tabstop = 2
+
diff --git a/config/nvim/lazy-lock.json b/config/nvim/lazy-lock.json
index 7996850..d146c6b 100644
--- a/config/nvim/lazy-lock.json
+++ b/config/nvim/lazy-lock.json
@@ -35,6 +35,7 @@
   "nvim-treesitter-textobjects": { "branch": "master", "commit": "dd0b2036c3a27cb6e6486f8bd24188c6ca43af0b" },
   "nvim-web-devicons": { "branch": "master", "commit": "313d9e7193354c5de7cdb1724f9e2d3f442780b0" },
   "omnisharp-extended-lsp.nvim": { "branch": "main", "commit": "4be2e8689067494ed7e5a4f1221adc31d1a07783" },
+  "plantuml-syntax": { "branch": "master", "commit": "1592944444513c208ab5a087397ba987932af750" },
   "playground": { "branch": "master", "commit": "ba48c6a62a280eefb7c85725b0915e021a1a0749" },
   "plenary.nvim": { "branch": "master", "commit": "4f71c0c4a196ceb656c824a70792f3df3ce6bb6d" },
   "swift.vim": { "branch": "master", "commit": "bb62135c4364c84b56499f4b54e1a6b8eca72eec" },
diff --git a/config/nvim/lua/fschauen/plugins/syntax.lua b/config/nvim/lua/fschauen/plugins/syntax.lua
index 1b93dc7..423a073 100644
--- a/config/nvim/lua/fschauen/plugins/syntax.lua
+++ b/config/nvim/lua/fschauen/plugins/syntax.lua
@@ -2,4 +2,5 @@ return {
   { "mityu/vim-applescript", ft = "applescript" },
   { "chr4/nginx.vim", ft = "nginx" },
   { "keith/swift.vim", ft = "swift" },
+  { "aklt/plantuml-syntax", ft = "plantuml" },
 }