diff --git a/test/Tests.hs b/test/Tests.hs
deleted file mode 100644
index 89ad4b3..0000000
--- a/test/Tests.hs
+++ /dev/null
@@ -1,4 +0,0 @@
-module Main where
-
-main :: IO ()
-main = pure ()
diff --git a/test/doctests.hs b/test/doctests.hs
new file mode 100644
index 0000000..8089f3f
--- /dev/null
+++ b/test/doctests.hs
@@ -0,0 +1,10 @@
+import Test.DocTest
+
+main :: IO ()
+main = doctest
+  [ "-isrc"
+  , "src/Lets/GetSetLens.hs"
+  , "src/Lets/Lens.hs"
+  , "src/Lets/OpticPolyLens.hs"
+  , "src/Lets/StoreLens.hs"
+  ]