diff --git a/cabal.project b/cabal.project
index 2f71058..bfbec4d 100644
--- a/cabal.project
+++ b/cabal.project
@@ -11,6 +11,11 @@ source-repository-package
     location: https://github.com/Bodigrim/tar
     tag: ac197ec7ea4838dc2b4e22b9b888b080cedf29cf
 
+source-repository-package
+    type: git
+    location: https://github.com/bgamari/terminal-size
+    tag: 34ea816bd63f75f800eedac12c6908c6f3736036
+
 constraints: http-io-streams -brotli
 
 package libarchive