diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.2.0.1
+
+* Support `Cabal-3.18`.
+
 ## 0.2
 
 * Allow add not only dependencies, but also modules.
diff --git a/app/Main.hs b/app/Main.hs
--- a/app/Main.hs
+++ b/app/Main.hs
@@ -57,16 +57,16 @@
 parseRawConfig :: Parser RawConfig
 parseRawConfig = do
   rcnfMProjectFile <-
-    optional $
-      strOption $
-        long "project-file"
-          <> metavar "FILE"
-          <> help "Set the path of the cabal.project file. Detect cabal.project or *.cabal in the current folder, if omitted."
+    optional
+      $ strOption
+      $ long "project-file"
+        <> metavar "FILE"
+        <> help "Set the path of the cabal.project file. Detect cabal.project or *.cabal in the current folder, if omitted."
   rcnfArgs <-
-    some1 $
-      strArgument $
-        metavar "ARGS"
-          <> help "Optional package component (wildcards such as 'exe', 'test' or 'bench' are supported) to update, followed by a non-empty list of package(s) to add to 'build-depends' section. Version bounds can be provided as well, use quotes to escape comparisons from your shell. E. g., 'foo < 0.2'."
+    some1
+      $ strArgument
+      $ metavar "ARGS"
+        <> help "Optional package component (wildcards such as 'exe', 'test' or 'bench' are supported) to update, followed by a non-empty list of package(s) to add to 'build-depends' section. Version bounds can be provided as well, use quotes to escape comparisons from your shell. E. g., 'foo < 0.2'."
   pure RawConfig {..}
 
 resolveCabalProjectInCurrentFolder :: IO (Maybe FilePath)
@@ -186,9 +186,9 @@
     Nothing -> "No Cabal files or projects are found in the current folder, please specify --project-file."
     Just projFn -> "No Cabal files are found in " ++ projFn
   (errs, []) ->
-    Left $
-      L.intercalate "\n" $
-        map (\(fn, err) -> "Cannot add a dependency to " ++ fn ++ " because: " ++ err) errs
+    Left
+      $ L.intercalate "\n"
+      $ map (\(fn, err) -> "Cannot add a dependency to " ++ fn ++ " because: " ++ err) errs
   (_, [inp]) -> pure $ snd inp
   (_, _inps) ->
     Left
@@ -201,11 +201,11 @@
   isCabalEnvVarSet <- isJust <$> lookupEnv "CABAL"
   rawArgs <- getArgs
   RawConfig {..} <-
-    withArgs ((if isCabalEnvVarSet then stripAdd else id) rawArgs) $
-      execParser $
-        info
-          (helper <*> parseRawConfig)
-          (fullDesc <> progDesc "Extend build-depends from the command line")
+    withArgs ((if isCabalEnvVarSet then stripAdd else id) rawArgs)
+      $ execParser
+      $ info
+        (helper <*> parseRawConfig)
+        (fullDesc <> progDesc "Extend build-depends from the command line")
 
   cabalFiles <- resolveCabalFiles rcnfMProjectFile
   cabalFilesAndContent <-
diff --git a/cabal-add.cabal b/cabal-add.cabal
--- a/cabal-add.cabal
+++ b/cabal-add.cabal
@@ -1,12 +1,13 @@
 cabal-version:   3.0
 name:            cabal-add
-version:         0.2
+version:         0.2.0.1
 license:         BSD-3-Clause
 license-file:    LICENSE
 maintainer:      andrew.lelechenko@gmail.com
 author:          Bodigrim
 tested-with:
-    ghc ==9.12.2 ghc ==9.10.2 ghc ==9.8.4 ghc ==9.6.7 ghc ==9.4.8
+    ghc ==9.14.1 ghc ==9.12.2 ghc ==9.10.3 ghc ==9.8.4 ghc ==9.6.7
+    ghc ==9.4.8
 
 synopsis:        Extend Cabal build-depends from the command line
 description:
@@ -37,8 +38,8 @@
     build-depends:
         base <5,
         bytestring <0.13,
-        Cabal >=3.8 && <3.15,
-        Cabal-syntax >=3.8 && <3.15,
+        Cabal >=3.8 && <3.19,
+        Cabal-syntax >=3.8 && <3.19,
         containers <0.9,
         mtl <2.4
 
@@ -51,12 +52,11 @@
         base <5,
         bytestring <0.13,
         cabal-add,
-        cabal-install-parsers >=0.4.1 && <0.7,
+        cabal-install-parsers >=0.4.1 && <0.8,
         Cabal-syntax,
         directory <1.4,
         filepath <1.6,
-        optparse-applicative >=0.16 && <0.20,
-        process <1.7
+        optparse-applicative >=0.16 && <0.20
 
 test-suite cabal-add-tests
     type:               exitcode-stdio-1.0
@@ -86,8 +86,5 @@
         Cabal,
         cabal-add,
         Diff >=0.4,
-        directory,
-        process,
         string-qq,
-        tasty,
-        temporary
+        tasty
diff --git a/src/Distribution/Client/Add.hs b/src/Distribution/Client/Add.hs
--- a/src/Distribution/Client/Add.hs
+++ b/src/Distribution/Client/Add.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE ImportQualifiedPost #-}
 {-# LANGUAGE LambdaCase #-}
 {-# LANGUAGE OverloadedStrings #-}
@@ -69,6 +70,10 @@
   resolveBuildTargets,
  )
 
+#if MIN_VERSION_Cabal_syntax(3,17,0)
+import Distribution.Fields (perror)
+#endif
+
 -- | An input for 'executeAddConfig'.
 data AddConfig = AddConfig
   { cnfOrigContents :: !ByteString
@@ -229,12 +234,18 @@
 
   packDescr <- case snd $ runParseResult $ parseGenericPackageDescription contents of
     Left (_, err) ->
-      errorWithCtx $ L.unlines $ map (showPError fileName) $ NE.toList err
+      errorWithCtx $ L.unlines $ map (showPError fileName . toPError) $ NE.toList err
     Right GenericPackageDescription {packageDescription = PackageDescription {specVersion = CabalSpecV1_0}} ->
       errorWithCtx legacyErr
     Right pd -> pure pd
 
   pure (fields, packDescr)
+  where
+#if MIN_VERSION_Cabal_syntax(3,17,0)
+    toPError = perror
+#else
+    toPError = id
+#endif
 
 readBuildTarget :: PackageDescription -> String -> Maybe ComponentName
 readBuildTarget pkg targetStr =
diff --git a/tests/Main.hs b/tests/Main.hs
--- a/tests/Main.hs
+++ b/tests/Main.hs
@@ -11,7 +11,7 @@
 import Data.Char (isAlpha)
 import Data.Maybe (mapMaybe)
 import Data.String.QQ (s)
-import System.Directory (findExecutable)
+import System.Directory (findExecutable, makeAbsolute)
 import System.Exit (ExitCode (..))
 import System.IO.Temp (withSystemTempDirectory)
 import System.Process (cwd, env, proc, readCreateProcessWithExitCode)
@@ -29,7 +29,7 @@
 instance IsTest CabalAddTest where
   testOptions = pure []
   run _opts CabalAddTest {..} _yieldProgress = do
-    mCabalAddExe <- findExecutable "cabal-add"
+    mCabalAddExe <- findExecutable "cabal-add" >>= traverse makeAbsolute
     case mCabalAddExe of
       Nothing -> pure $ testFailed "cabal-add executable is not in PATH"
       Just cabalAddExe -> do