diff --git a/HushGP.cabal b/HushGP.cabal
index d0eb20d..3c95d40 100644
--- a/HushGP.cabal
+++ b/HushGP.cabal
@@ -63,6 +63,7 @@ library
                     , HushGP.GP
                     , HushGP.GP.PushArgs
                     , HushGP.GP.Variation
+                    , HushGP.GP.Downsample
                     , HushGP.Problems.IntegerRegression
 
 
diff --git a/src/HushGP/GP/Downsample.hs b/src/HushGP/GP/Downsample.hs
new file mode 100644
index 0000000..06dc43e
--- /dev/null
+++ b/src/HushGP/GP/Downsample.hs
@@ -0,0 +1,7 @@
+module HushGP.GP.Downsample where
+
+import HushGP.State
+import HushGP.Genome
+
+updateCaseDistances :: [Individual] -> ([[Gene]], [Gene]) -> ([[Gene]], [Gene]) -> String -> Double -> ([[Gene]], [Gene])
+updateCaseDistances evaledPop downsampleData trainingData informedDownsamplingType solutionThreshold = undefined