diff --git a/nemo_rl/environments/math_environment.py b/nemo_rl/environments/math_environment.py
index 068eb9f35c..6d4553640b 100644
--- a/nemo_rl/environments/math_environment.py
+++ b/nemo_rl/environments/math_environment.py
@@ -152,7 +152,7 @@ def verify(
             ground_truth = answer_parsing.normalize_response(ground_truth)
             response = answer_parsing.normalize_response(response)
             extracted_answer = None
-            match = re.search("(?i)Answer\s*:[ \t]*([A-Z])", response)
+            match = re.search(r"(?i)Answer\s*:[ \t]*([A-Z])", response)
             if match:
                 extracted_answer = answer_parsing.normalize_extracted_answer(
                     match.group(1)
diff --git a/nemo_rl/evals/answer_parsing.py b/nemo_rl/evals/answer_parsing.py
index dcf020774a..2719decce6 100644
--- a/nemo_rl/evals/answer_parsing.py
+++ b/nemo_rl/evals/answer_parsing.py
@@ -19,48 +19,48 @@
 )
 # All the different ways "Answer" is written in different languages
 MULTILINGUAL_ANSWER_REGEXES = [
-    "Answer\s*:",
-    "Answer\s*:​​​​​​",  # Korean invisible character
-    "উত্তর\s*:",
-    "उत्तर\s*:",
-    "উত্তরঃ",
-    "উত্তর\s*:",
-    "Antwort\s*:",
-    "답변\s*:",
-    "정답\s*:",
-    "답\s*:",
-    "答案\s*：",
-    "答案\s*:",
-    "答\s*：",
-    "答\s*:",
-    "答复\s*：",
-    "答曰\s*：",
-    "الإجابة:",
-    "الجواب:",
-    "إجابة:",
-    "الإجابة النهائية:",
-    "الإجابة الصحيحة:",
-    "الإجابة الصحيحة هي:",
-    "الإجابة هي:",
-    "الجواب النهائي:",
-    "Respuesta\s*:",
-    "Risposta\s*:",
-    "答え\s*:",
-    "答え\s*：",
-    "回答\s*:",
-    "回答\s*：",
-    "解答\s*:",
-    "Jawaban\s*:",
-    "Réponse\s*:",
-    "Resposta\s*:",
-    "Jibu\s*:",
-    "Idahun\s*:",
-    "Ìdáhùn\s*:",
-    "Idáhùn\s*:",
-    "Àmọ̀nà\s*:",
-    "Àdáhùn\s*:",
-    "Ànúgọ\s*:",
-    "Àṣàyàn\s*:",
+    r"Answer\s*:",
+    r"Answer\s*:​​​​​​",  # Korean invisible character
+    r"উত্তর\s*:",
+    r"उत्तर\s*:",
+    r"উত্তরঃ",
+    r"উত্তর\s*:",
+    r"Antwort\s*:",
+    r"답변\s*:",
+    r"정답\s*:",
+    r"답\s*:",
+    r"答案\s*：",
+    r"答案\s*:",
+    r"答\s*：",
+    r"答\s*:",
+    r"答复\s*：",
+    r"答曰\s*：",
+    r"الإجابة:",
+    r"الجواب:",
+    r"إجابة:",
+    r"الإجابة النهائية:",
+    r"الإجابة الصحيحة:",
+    r"الإجابة الصحيحة هي:",
+    r"الإجابة هي:",
+    r"الجواب النهائي:",
+    r"Respuesta\s*:",
+    r"Risposta\s*:",
+    r"答え\s*:",
+    r"答え\s*：",
+    r"回答\s*:",
+    r"回答\s*：",
+    r"解答\s*:",
+    r"Jawaban\s*:",
+    r"Réponse\s*:",
+    r"Resposta\s*:",
+    r"Jibu\s*:",
+    r"Idahun\s*:",
+    r"Ìdáhùn\s*:",
+    r"Idáhùn\s*:",
+    r"Àmọ̀nà\s*:",
+    r"Àdáhùn\s*:",
+    r"Ànúgọ\s*:",
+    r"Àṣàyàn\s*:",
 ]