diff --git a/Shakefile.hs b/Shakefile.hs
--- a/Shakefile.hs
+++ b/Shakefile.hs
@@ -20,10 +20,11 @@
         , "Shakefile.hs"
         , "src//*.hs"
         ]
+      pats' = delete "stack.yaml" pats
 
   -- | Haskell rules.
   --
-  hsRules "."
+  hsRules "." pats'
 
   -- | Cabal rules.
   --
diff --git a/preamble.cabal b/preamble.cabal
--- a/preamble.cabal
+++ b/preamble.cabal
@@ -1,5 +1,5 @@
 name: preamble
-version: 0.0.44
+version: 0.0.45
 cabal-version: >=1.22
 build-type: Simple
 license: MIT
@@ -61,7 +61,7 @@
     main-is: Shakefile.hs
     build-depends:
         base >=4.8 && <5,
-        shakers >=0.0.25
+        shakers >=0.0.26
     default-language: Haskell2010
     ghc-options: -threaded -rtsopts -with-rtsopts=-N -Wall