1 files changed, 1 insertions, 0 deletions

diff --git a/packages/base/src/Internal/Chain.hs b/packages/base/src/Internal/Chain.hs
index 4000c2b..0d90198 100644
--- a/packages/base/src/Internal/Chain.hs
+++ b/packages/base/src/Internal/Chain.hs
@@ -25,6 +25,7 @@ module Internal.Chain (
 import Data.Maybe
 
 import Internal.Matrix
+import Internal.Specialized
 import Internal.Numeric
 
 import qualified Data.Array.IArray as A