diff --git a/project-builder/mill/build.sh b/project-builder/mill/build.sh
index f0bb59ac..a4a9e95b 100755
--- a/project-builder/mill/build.sh
+++ b/project-builder/mill/build.sh
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -e
 
-if [ $# -ne 7]; then
+if [ $# -ne 7 ]; then
   echo "Wrong number of script arguments, expected $0 <repo_dir> <scala-version> <targets> <maven_repo> <sbt_version?> <project_config?> <extra-scalacOption?> <disabled-scalacOptions?>, got $#: $@"
   exit 1
 fi
diff --git a/project-builder/mill/prepare-project.sh b/project-builder/mill/prepare-project.sh
index aca27cc7..607528e2 100755
--- a/project-builder/mill/prepare-project.sh
+++ b/project-builder/mill/prepare-project.sh
@@ -76,13 +76,7 @@ for elem in $(echo "${projectConfig}" | jq -r '.sourcePatches // [] | .[] | @bas
   echo "Path:        $path"
   echo "Pattern:     $pattern"
   echo "Replacement: $replaceWith"
-
-  set -x
-  # Cannot determinate did sed script was applied, so perform two ops each time
-  # Don't use in-place option for easier cross-platform compat (macos vs unix)
-  (sed "s/$pattern/$replaceWith/" "$path" > $path.tmp && mv $path.tmp $path ) || true
-  (sed -E "s/$pattern/$replaceWith/" "$path" > $path.tmp && mv $path.tmp $path ) || true
-  set +x
+  scala-cli run ${scriptDir}/../../scripts/searchAndReplace.scala -- "${repoDir}/${path}" "${pattern}" "${replaceWith}"
 done
 
 prepareScript="${OPENCB_SCRIPT_DIR:?OPENCB_SCRIPT_DIR not defined}/prepare-scripts/${projectName}.sh"
diff --git a/project-builder/sbt/prepare-project.sh b/project-builder/sbt/prepare-project.sh
index 8b735967..31cbd90f 100755
--- a/project-builder/sbt/prepare-project.sh
+++ b/project-builder/sbt/prepare-project.sh
@@ -75,15 +75,7 @@ for elem in $(echo "${projectConfig}" | jq -r '.sourcePatches // [] | .[] | @bas
   echo "Path:        $path"
   echo "Pattern:     $pattern"
   echo "Replacement: $replaceWith"
-
-  set -x
-  # Cannot determinate did sed script was applied, so perform two ops each time
-  # Don't use in-place option for easier cross-platform compat (macos vs unix)
-  repoPath=$repoDir/$path
-  (sed "s/$pattern/$replaceWith/" "$repoPath" > $repoPath.tmp && mv $repoPath.tmp $repoPath ) || true
-  (sed -E "s/$pattern/$replaceWith/" "$repoPath" > $repoPath.tmp && mv $repoPath.tmp $repoPath ) || true
-  
-  set +x
+  scala-cli run ${scriptDir}/../../scripts/searchAndReplace.scala -- "${repoDir}/${path}" "${pattern}" "${replaceWith}"
 done
 
 prepareScript="${OPENCB_SCRIPT_DIR:?OPENCB_SCRIPT_DIR not defined}/prepare-scripts/${projectName}.sh"
diff --git a/scripts/searchAndReplace.scala b/scripts/searchAndReplace.scala
new file mode 100644
index 00000000..6b163900
--- /dev/null
+++ b/scripts/searchAndReplace.scala
@@ -0,0 +1,22 @@
+import java.nio.file.Path
+import java.nio.file.Paths
+import java.util.regex.PatternSyntaxException
+import java.nio.file.Files
+
+import scala.util.chaining.*
+
+given scala.util.CommandLineParser.FromString[Path] = Paths.get(_)
+
+@main def searchAndReplace(file: Path, textOrPattern: String, replacement: String): Unit = 
+  val input = io.Source.fromFile(file.toFile()).mkString
+  input
+    .replace(textOrPattern, replacement)
+    .pipe: input =>
+      try textOrPattern.r.replaceAllIn(input, replacement)
+      catch case _: PatternSyntaxException => input  
+    .pipe: output =>
+      if input != output then 
+        println(s"Successfully applied pattern '$textOrPattern' in $file")
+        Files.write(file, output.getBytes())
+      else 
+        System.err.println(s"Failed to apply pattern '$textOrPattern' in $file")