diff --git a/config/neovim/after/plugin/completion.lua b/config/neovim/after/plugin/completion.lua
index ec04244..b7d05af 100644
--- a/config/neovim/after/plugin/completion.lua
+++ b/config/neovim/after/plugin/completion.lua
@@ -26,6 +26,7 @@ cmp.setup {
   },
 
   sources = {
+    { name = "nvim_lsp_signature_help" },
     { name = "nvim_lsp" },
     { name = "nvim_lua" },
     { name = "cmp_tabnine" },
diff --git a/home-manager/modules/common.nix b/home-manager/modules/common.nix
index 2e28687..e61f002 100644
--- a/home-manager/modules/common.nix
+++ b/home-manager/modules/common.nix
@@ -129,6 +129,7 @@
       cmp-buffer
       cmp-cmdline
       cmp-nvim-lsp
+      cmp-nvim-lsp-signature-help
       cmp-path
       cmp-tabnine
       cmp-treesitter