diff --git a/docs/src/index.md b/docs/src/index.md
index fa3a847..e67d849 100644
--- a/docs/src/index.md
+++ b/docs/src/index.md
@@ -2,6 +2,9 @@
 EditURL = "https://github.com/JuliaIO/Tar.jl/blob/master/docs/src/index.md"
 ```
 
+The `Tar` module provides a simple interface for handling tar archives, including creation of
+archives, extraction of selected files from an archive, and access to metadata.
+
 # Tar
 
 ```@docs
diff --git a/src/Tar.jl b/src/Tar.jl
index f0d821f..73bc159 100644
--- a/src/Tar.jl
+++ b/src/Tar.jl
@@ -1,3 +1,7 @@
+"""
+The `Tar` module provides a simple interface for handling tar archives, including creation of
+archives, extraction of selected files from an archive, and access to metadata.
+"""
 module Tar
 
 import SHA
diff --git a/test/runtests.jl b/test/runtests.jl
index 2212b0e..878c6a2 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1130,3 +1130,9 @@ end
         end
     end
 end
+
+if isdefined(Docs, :undocumented_names) # new in Julia 1.11
+    @testset "Docstrings" begin
+        @test isempty(Docs.undocumented_names(Tar))
+    end
+end