diff --git a/semantic-diff.cabal b/semantic-diff.cabal
index a5f8c6180..b4e65b367 100644
--- a/semantic-diff.cabal
+++ b/semantic-diff.cabal
@@ -28,6 +28,7 @@ library
                      , Data.Record
                      , Data.Syntax
                      , Data.Syntax.Comment
+                     , Data.Syntax.Declaration
                      , Data.Syntax.Literal
                      , Data.Text.Listable
                      , Diff
diff --git a/src/Data/Syntax/Declaration.hs b/src/Data/Syntax/Declaration.hs
new file mode 100644
index 000000000..6a3dc552d
--- /dev/null
+++ b/src/Data/Syntax/Declaration.hs
@@ -0,0 +1 @@
+module Data.Syntax.Declaration where