diff --git a/cabal.project b/cabal.project
index 5bdb42674194..916bd1a7bdc1 100644
--- a/cabal.project
+++ b/cabal.project
@@ -7,4 +7,14 @@ flags: +embed_data_files
 constraints: skylighting-format-blaze-html >= 0.1.1.2,
              skylighting-format-context >= 0.1.0.2
 
--- update skylighting/skylighting-core
+source-repository-package
+  type: git
+  location: https://github.com/jgm/typst-hs
+  tag: 9df72efa46230222de5eb7a936405df2434bf4db
+
+source-repository-package
+  type: git
+  location: https://github.com/jgm/texmath
+  tag: 7099b90314618e7f73226426be0b46cc3a940aa0
+
+-- TODO update skylighting/skylighting-core