diff --git a/README.md b/README.md
index 9230375..4f80a50 100644
--- a/README.md
+++ b/README.md
@@ -63,7 +63,6 @@ vim.api.nvim_set_keymap(
 )
 ```
 
-
 #### _Keymaps_
 
 - `<CR>` opens a diff for the current file with the selected commit
@@ -149,14 +148,28 @@ With Lazy
         "aaronhallaert/advanced-git-search.nvim",
         config = function()
             require("telescope").load_extension("advanced_git_search")
+
+            require("telescope").setup{
+                -- move this to the place where you call the telescope setup function
+                extensions = {
+                    advanced_git_search = {
+                        -- fugitive or diffview
+                        diff_plugin = "fugitive",
+                    }
+                }
+            }
         end,
         dependencies = {
             "nvim-telescope/telescope.nvim",
             -- to show diff splits and open commits in browser
             "tpope/vim-fugitive",
+            -- OPTIONAL: to replace the diff from fugitive with diffview.nvim
+            -- (fugitive is still needed to open in browser)
+            -- "sindrets/diffview.nvim",
         },
     }
 ```
+
 With Packer
 
 ```lua
@@ -164,11 +177,24 @@ With Packer
         "aaronhallaert/advanced-git-search.nvim",
         config = function()
             require("telescope").load_extension("advanced_git_search")
+
+            require("telescope").setup{
+                -- move this to the place where you call the telescope setup function
+                extensions = {
+                    advanced_git_search = {
+                        -- fugitive or diffview
+                        diff_plugin = "fugitive",
+                    }
+                }
+            }
         end,
         requires = {
             "nvim-telescope/telescope.nvim",
             -- to show diff splits and open commits in browser
             "tpope/vim-fugitive",
+            -- OPTIONAL: to replace the diff from fugitive with diffview.nvim
+            -- (fugitive is still needed to open in browser)
+            -- "sindrets/diffview.nvim",
         },
     })
 ```
@@ -177,4 +203,5 @@ With Packer
 
 - git
 - vim-fugitive
+- sindrets/diffview.nvim
 - telescope.nvim
diff --git a/lua/advanced_git_search/git_utils.lua b/lua/advanced_git_search/git_utils.lua
index 8523cde..0773496 100644
--- a/lua/advanced_git_search/git_utils.lua
+++ b/lua/advanced_git_search/git_utils.lua
@@ -2,6 +2,7 @@ local file = require("advanced_git_search.utils.file")
 local utils = require("advanced_git_search.utils")
 local finders = require("telescope.finders")
 local previewers = require("telescope.previewers")
+local config = require("advanced_git_search.utils.config")
 
 local last_prompt = nil
 local M = {}
@@ -202,10 +203,22 @@ M.open_diff_view = function(
     commit, --[[optional]]
     file_name
 )
+    local diff_plugin = config.diff_plugin()
+
     if file_name ~= nil and file_name ~= "" then
-        vim.api.nvim_command(":Gvdiffsplit " .. commit .. ":" .. file_name)
+        if diff_plugin == "diffview" then
+            vim.api.nvim_command(
+                ":DiffviewOpen " .. commit .. " -- " .. file_name
+            )
+        elseif diff_plugin == "fugitive" then
+            vim.api.nvim_command(":Gvdiffsplit " .. commit .. ":" .. file_name)
+        end
     else
-        vim.api.nvim_command(":Gvdiffsplit " .. commit)
+        if diff_plugin == "diffview" then
+            vim.api.nvim_command(":DiffviewOpen " .. commit)
+        elseif diff_plugin == "fugitive" then
+            vim.api.nvim_command(":Gvdiffsplit " .. commit)
+        end
     end
 end
 
diff --git a/lua/advanced_git_search/utils/config.lua b/lua/advanced_git_search/utils/config.lua
new file mode 100644
index 0000000..c77467c
--- /dev/null
+++ b/lua/advanced_git_search/utils/config.lua
@@ -0,0 +1,48 @@
+local M = {}
+
+local config = {}
+
+M.setup = function(ext_config)
+    ext_config = ext_config or {}
+
+    ext_config.diff_plugin = ext_config.diff_plugin or "fugitive"
+
+    config = ext_config
+end
+
+M.get_config = function()
+    return config
+end
+
+M.diff_plugin = function()
+    local diff_plugin = config["diff_plugin"]
+
+    if diff_plugin == "fugitive" and vim.fn.exists(":Gvdiffsplit") == 0 then
+        vim.notify(
+            "fugitive configured but git-fugitive is not installed",
+            vim.log.levels.ERROR,
+            { title = "Advanced Git Search" }
+        )
+        return nil
+    elseif
+        diff_plugin == "diffview" and vim.fn.exists(":DiffviewOpen") == 0
+    then
+        vim.notify(
+            "diffview configured but diffview.nvim is not installed",
+            vim.log.levels.ERROR,
+            { title = "Advanced Git Search" }
+        )
+        return nil
+    elseif diff_plugin == nil then
+        vim.notify(
+            "No diff plugin configured",
+            vim.log.levels.ERROR,
+            { title = "Advanced Git Search" }
+        )
+        return nil
+    end
+
+    return diff_plugin
+end
+
+return M
diff --git a/lua/telescope/_extensions/advanced_git_search.lua b/lua/telescope/_extensions/advanced_git_search.lua
index 7072110..e4dc0b6 100644
--- a/lua/telescope/_extensions/advanced_git_search.lua
+++ b/lua/telescope/_extensions/advanced_git_search.lua
@@ -1,6 +1,10 @@
 local func = require("advanced_git_search")
+local config = require("advanced_git_search.utils.config")
 
 return require("telescope").register_extension({
+    setup = function(ext_config, _)
+        config.setup(ext_config)
+    end,
     exports = {
         checkout_reflog = func.checkout_reflog,
         diff_branch_file = func.diff_branch_file,