diff --git a/integration-tests/cypress/e2e/cmp-rg/basic_spec.cy.ts b/integration-tests/cypress/e2e/cmp-rg/basic_spec.cy.ts
index 71bfb34..7b1ccd3 100644
--- a/integration-tests/cypress/e2e/cmp-rg/basic_spec.cy.ts
+++ b/integration-tests/cypress/e2e/cmp-rg/basic_spec.cy.ts
@@ -15,6 +15,9 @@ describe("the basics", () => {
       cy.typeIntoTerminal("hip")
 
       cy.contains("Hippopotamus123 (rg)")
+
+      // should show documentation with more details about the match
+      cy.contains("Hippopotamus123 is my password")
     })
   })
 })
diff --git a/integration-tests/test-environment/other-file.txt b/integration-tests/test-environment/other-file.txt
index b612bbd..20a6c71 100644
--- a/integration-tests/test-environment/other-file.txt
+++ b/integration-tests/test-environment/other-file.txt
@@ -1,2 +1,3 @@
 This file contains some text that can be matched in integration-tests.
-Hippopotamus123
+Hippopotamus123 is my password.
+Hippopotamus234 was my previous password.
diff --git a/integration-tests/test-environment/test-setup.lua b/integration-tests/test-environment/test-setup.lua
index 1e3c3e7..4460982 100644
--- a/integration-tests/test-environment/test-setup.lua
+++ b/integration-tests/test-environment/test-setup.lua
@@ -71,6 +71,10 @@ local plugins = {
         autocomplete = {
           max_height = 25,
         },
+        documentation = {
+          auto_show = true,
+          auto_show_delay_ms = 0,
+        },
       },
     },
   },
diff --git a/lua/blink-cmp-rg/init.lua b/lua/blink-cmp-rg/init.lua
index ac90af1..b788639 100644
--- a/lua/blink-cmp-rg/init.lua
+++ b/lua/blink-cmp-rg/init.lua
@@ -79,9 +79,16 @@ function RgSource:get_completions(context, resolve)
       item = ok and item or {}
 
       if item.type == "match" then
+        assert(
+          item.data.lines.text,
+          "ripgrep output missing item.data.lines.text for item "
+            .. vim.inspect(item)
+        )
+        local documentation = item.data.lines.text or ""
         for _, submatch in ipairs(item.data.submatches) do
           ---@diagnostic disable-next-line: missing-fields
           items[submatch.match.text] = {
+            documentation = documentation,
             source_id = "blink-cmp-rg",
             label = submatch.match.text .. " (rg)",
             insertText = submatch.match.text,