diff --git a/dataframe-operations.cabal b/dataframe-operations.cabal
--- a/dataframe-operations.cabal
+++ b/dataframe-operations.cabal
@@ -1,6 +1,6 @@
 cabal-version:      2.4
 name:               dataframe-operations
-version:            1.0.0.0
+version:            1.0.1.0
 
 synopsis:           Column operations, expression DSL, and statistics for the dataframe ecosystem.
 description:
@@ -26,6 +26,7 @@
         -Wincomplete-uni-patterns
         -Wunused-imports
         -Wunused-local-binds
+        -Wunused-packages
 
 library
     import:             warnings
@@ -48,11 +49,9 @@
                         DataFrame.Typed.Join
                         DataFrame.Typed.Operations
     build-depends:      base >= 4 && < 5,
-                        bytestring >= 0.11 && < 0.13,
                         containers >= 0.6.7 && < 0.9,
                         dataframe-core ^>= 1.0,
                         dataframe-parsing ^>= 1.0,
-                        deepseq >= 1 && < 2,
                         hashable >= 1.2 && < 2,
                         random >= 1.2 && < 2,
                         regex-tdfa >= 1.3.0 && < 2,
diff --git a/src/DataFrame/Operations/Core.hs b/src/DataFrame/Operations/Core.hs
--- a/src/DataFrame/Operations/Core.hs
+++ b/src/DataFrame/Operations/Core.hs
@@ -30,7 +30,6 @@
     TypedColumn (..),
     columnLength,
     columnTypeString,
-    expandColumn,
     fromList,
     fromVector,
     toDoubleVector,
diff --git a/src/DataFrame/Operations/Subset.hs b/src/DataFrame/Operations/Subset.hs
--- a/src/DataFrame/Operations/Subset.hs
+++ b/src/DataFrame/Operations/Subset.hs
@@ -45,7 +45,7 @@
  )
 import DataFrame.Internal.Expression
 import DataFrame.Internal.Interpreter
-import DataFrame.Operations.Core
+import DataFrame.Operations.Core ()
 import DataFrame.Operations.Merge ()
 import DataFrame.Operations.Transformations (apply)
 import DataFrame.Operators
diff --git a/src/DataFrame/Operations/Typing.hs b/src/DataFrame/Operations/Typing.hs
--- a/src/DataFrame/Operations/Typing.hs
+++ b/src/DataFrame/Operations/Typing.hs
@@ -38,7 +38,7 @@
  )
 import DataFrame.Internal.Parsing
 import DataFrame.Internal.Schema
-import DataFrame.Operations.Core
+import DataFrame.Operations.Core ()
 import Text.Read
 import Type.Reflection