diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Revision history for sound-change
 
+## 0.1.0.1 -- 2026-06-19
+
+* Tested with newest versions of dependencies and updated version bounds.
+* Removed unused imports.
+
 ## 0.1.0.0 -- 2023-10-13
 
 * First version. Released on an unsuspecting world.
diff --git a/sound-change.cabal b/sound-change.cabal
--- a/sound-change.cabal
+++ b/sound-change.cabal
@@ -1,6 +1,6 @@
 cabal-version:      2.4
 name:               sound-change
-version:            0.1.0.0
+version:            0.1.0.1
 author:             Owen Bechtel
 maintainer:         ombspring@gmail.com
 
@@ -53,12 +53,12 @@
 
   build-depends:
     base >= 4.9.0.0 && < 5,
-    containers >= 0.2.0.0 && < 0.8,
+    containers >= 0.2.0.0 && < 0.9,
     syb >= 0.1.0.0 && < 0.8,
-    template-haskell >= 2.5.0.0 && < 2.22,
-    megaparsec >= 9.0.0 && < 10,
-    parser-combinators >= 0.4.0 && < 2,
-    mtl >= 1.0 && < 2.4
+    template-haskell >= 2.5.0.0 && < 2.25,
+    megaparsec >= 9.0.0 && < 9.9,
+    parser-combinators >= 0.4.0 && < 1.4,
+    mtl >= 1.0 && < 2.4,
 
 test-suite test
   type:             exitcode-stdio-1.0
@@ -70,7 +70,7 @@
   other-modules: Language.ChangeSpec
 
   build-depends:
-    base, hspec, containers, sound-change
+    base, hspec, containers, sound-change == 0.1.0.1
 
   build-tool-depends:
     hspec-discover:hspec-discover
diff --git a/src/Language/Change.hs b/src/Language/Change.hs
--- a/src/Language/Change.hs
+++ b/src/Language/Change.hs
@@ -23,13 +23,13 @@
 import qualified Data.Map as Map
 import Data.Set (Set)
 import Data.Map (Map)
-import Data.List (find, foldl', scanl')
+import Data.List (find, scanl')
 
 -- | A finite set, or the complement of a finite set.
 data PSet a = PSet (Set a) Bool
   deriving (Show)
 
--- | Test for membership in a 'PSet'.
+-- | Test for membership in a t'PSet'.
 --
 -- @
 -- member x (PSet set b) = 'Set.member' x set == b
@@ -37,15 +37,15 @@
 member :: Ord a => a -> PSet a -> Bool
 member x (PSet set b) = Set.member x set == b
 
--- | A single component of an 'Env'.
+-- | A single component of an t'Env'.
 data Pattern a
-  = One (PSet a)      -- ^ Matches one occurrence of a 'PSet' member.
-  | Optional (PSet a) -- ^ Matches zero or one occurences of a 'PSet' member.
-  | Many (PSet a)     -- ^ Matches zero or more occurences of a 'PSet' member.
+  = One (PSet a)      -- ^ Matches one occurrence of a t'PSet' member.
+  | Optional (PSet a) -- ^ Matches zero or one occurences of a t'PSet' member.
+  | Many (PSet a)     -- ^ Matches zero or more occurences of a t'PSet' member.
   deriving (Show)
 
 -- | An environment in which a phoneme (or in general, a value of type @a@), might occur.
--- An 'Env' is specified by two lists of patterns: the environment before the phoneme (ordered from nearest to farthest), and the environment after.
+-- An t'Env' is specified by two lists of patterns: the environment before the phoneme (ordered from nearest to farthest), and the environment after.
 data Env a = Env [Pattern a] [Pattern a] 
   deriving (Show)
 
@@ -71,7 +71,7 @@
       testPatterns list ps
     || testPatterns list (One set : Many set : ps)
 
--- | Match two lists of phonemes against an 'Env'.
+-- | Match two lists of phonemes against an t'Env'.
 testEnv :: Ord a => [a] -> [a] -> Env a -> Bool
 testEnv left right (Env psL psR) =
   testPatterns left psL && testPatterns right psR
diff --git a/src/Language/Change/Quote.hs b/src/Language/Change/Quote.hs
--- a/src/Language/Change/Quote.hs
+++ b/src/Language/Change/Quote.hs
@@ -36,7 +36,7 @@
 import Language.Haskell.TH.Lib (appE, conE, varE)
 import Data.Generics.Aliases (extQ)
 
-import Language.Change (Change(..), Env(..), PSet(..), Pattern(..), applyChanges)
+import Language.Change (Change(..), Env(..), PSet(..), Pattern(..))
 
 data CharS
   = Lit Char
@@ -203,7 +203,7 @@
 total p = allowNewlines spaces >> (p <* M.eof)
 
 {-|
-Compile a sound change specification into a value of type 'Change' 'Char'.
+Compile a sound change specification into a value of type t'Change' 'Char'.
 
 Example:
 
@@ -285,7 +285,7 @@
   }
 
 {-|
-Compile a sequence of sound changes into a value of type @['Change' 'Char']@.
+Compile a sequence of sound changes into a value of type @[t'Change' 'Char']@.
 Each change is preceded by a bullet @*@. For example:
 
 @
@@ -298,7 +298,7 @@
   |]
 @
 
-For example, @'applyChanges' changes "ikt"@ would return @"içt"@.
+For example, @'Language.Change.applyChanges' changes "ikt"@ would return @"içt"@.
 -}
 
 chs :: QuasiQuoter
diff --git a/test/Language/ChangeSpec.hs b/test/Language/ChangeSpec.hs
--- a/test/Language/ChangeSpec.hs
+++ b/test/Language/ChangeSpec.hs
@@ -16,8 +16,6 @@
 
 import Language.Change.Quote (ch, chs)
 
-import Debug.Trace
-
 spec :: Spec
 spec = do
   describe "Language.Change.member" do
@@ -138,7 +136,6 @@
         y > i / _                   // unconditional shift               
         |]
 
-      traceShowM change1
       applyChange change1 "uni" `shouldBe` "yni"
       applyChange change1 "yni" `shouldBe` "ini"
       applyChange change1 "esoki" `shouldBe` "eski"