diff --git a/hm-imports/nvim/config/lua/plugin/cmp.lua b/hm-imports/nvim/config/lua/plugin/cmp.lua
index e157b97b..c781116b 100644
--- a/hm-imports/nvim/config/lua/plugin/cmp.lua
+++ b/hm-imports/nvim/config/lua/plugin/cmp.lua
@@ -35,6 +35,7 @@ cmp.setup({
   },
   sources = cmp.config.sources({
     { name = "nvim_lsp" },
+    { name = 'nvim_lsp_signature_help' },
     { name = "luasnip" },
   }, { name = "buffer" }),
   formatting = {
diff --git a/hm-imports/nvim/default.nix b/hm-imports/nvim/default.nix
index 75d97597..d4951eb9 100644
--- a/hm-imports/nvim/default.nix
+++ b/hm-imports/nvim/default.nix
@@ -108,6 +108,7 @@ in
             cmp-buffer
             cmp-path
             cmp-cmdline
+            cmp-nvim-lsp-signature-help
             nvim-cmp # completion ui
             lspkind-nvim # icons for completion
             # completion-snippets