diff --git a/tests/data/jpn_art.jpg b/tests/data/jpn_art.jpg
new file mode 100644
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diff --git a/tests/data/logo.gif b/tests/data/logo.gif
new file mode 100644
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diff --git a/tests/data/logo.jpg b/tests/data/logo.jpg
new file mode 100644
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diff --git a/tests/data/logo.png b/tests/data/logo.png
new file mode 100644
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diff --git a/thumbnail-plus.cabal b/thumbnail-plus.cabal
--- a/thumbnail-plus.cabal
+++ b/thumbnail-plus.cabal
@@ -1,5 +1,5 @@
 name:                thumbnail-plus
-version:             1.0.4
+version:             1.0.5
 synopsis:            Generate thumbnails easily and safely.
 homepage:            https://github.com/prowdsponsor/thumbnail-plus
 license:             MIT
@@ -35,6 +35,13 @@
   .
   Please report any vulnerabilities you may find, we take strive
   to make this library suitable for processing arbitrary images.
+
+extra-source-files:
+  README.md
+  tests/data/jpn_art.jpg
+  tests/data/logo.gif
+  tests/data/logo.jpg
+  tests/data/logo.png
 
 source-repository head
   type:     git