diff --git a/stack.hsb2hs.yaml b/stack.hsb2hs.yaml
index 1703e778f..30a3f17e2 100644
--- a/stack.hsb2hs.yaml
+++ b/stack.hsb2hs.yaml
@@ -1,4 +1,4 @@
 packages:
 - 'https://hackage.haskell.org/package/preprocessor-tools-1.0.1/preprocessor-tools-1.0.1.tar.gz'
 - 'https://hackage.haskell.org/package/hsb2hs-0.3.1/hsb2hs-0.3.1.tar.gz'
-resolver: lts-3.10
+resolver: lts-3.20