diff --git a/ripper/encode.py b/ripper/encode.py
index e5a0e92..7aa5939 100644
--- a/ripper/encode.py
+++ b/ripper/encode.py
@@ -83,6 +83,8 @@ def run_encode(cmd: list[str], input_path: str | None = None) -> int:
         stdout=subprocess.PIPE,
         stderr=subprocess.STDOUT,
         text=True,
+        encoding="utf-8",
+        errors="replace",
     )
 
     progress = Progress(
diff --git a/ripper/scanner.py b/ripper/scanner.py
index 18ff0af..481d47b 100644
--- a/ripper/scanner.py
+++ b/ripper/scanner.py
@@ -74,6 +74,8 @@ def run(cmd: list[str], capture: bool = True) -> subprocess.CompletedProcess:
         cmd,
         capture_output=capture,
         text=True,
+        encoding="utf-8",
+        errors="replace",
     )