diff --git a/hls-cabal-fmt-plugin.cabal b/hls-cabal-fmt-plugin.cabal
--- a/hls-cabal-fmt-plugin.cabal
+++ b/hls-cabal-fmt-plugin.cabal
@@ -1,6 +1,6 @@
 cabal-version:      2.4
 name:               hls-cabal-fmt-plugin
-version:            0.1.0.0
+version:            2.0.0.0
 synopsis:           Integration with the cabal-fmt code formatter
 description:
   Please see the README on GitHub at <https://github.com/haskell/haskell-language-server#readme>
@@ -12,7 +12,9 @@
 maintainer:         jana.chadt@nets.at
 category:           Development
 build-type:         Simple
-extra-source-files: LICENSE
+extra-source-files:
+  LICENSE
+  test/testdata/**/*.hs
 
 flag isolateTests
   description: Should tests search for 'cabal-fmt' on the $PATH or shall we install it via build-tool-depends?
@@ -31,8 +33,8 @@
     , base            >=4.12 && <5
     , directory
     , filepath
-    , ghcide          ^>= 1.9
-    , hls-plugin-api  ^>= 1.6
+    , ghcide          == 2.0.0.0
+    , hls-plugin-api  == 2.0.0.0
     , lens
     , lsp-types
     , process
@@ -53,7 +55,7 @@
     , directory
     , filepath
     , hls-cabal-fmt-plugin
-    , hls-test-utils        ^>=1.5
+    , hls-test-utils        == 2.0.0.0
 
   if flag(isolateTests)
     build-tool-depends: cabal-fmt:cabal-fmt ^>=0.1.6
diff --git a/test/testdata/src/MyLib.hs b/test/testdata/src/MyLib.hs
new file mode 100644
--- /dev/null
+++ b/test/testdata/src/MyLib.hs
@@ -0,0 +1,4 @@
+module MyLib (someFunc) where
+
+someFunc :: IO ()
+someFunc = putStrLn "someFunc"
diff --git a/test/testdata/src/MyOtherLib.hs b/test/testdata/src/MyOtherLib.hs
new file mode 100644
--- /dev/null
+++ b/test/testdata/src/MyOtherLib.hs
@@ -0,0 +1,3 @@
+module MyOtherLib where
+
+bar = 2