diff --git a/src/alpaca_eval/evaluators_configs/alpaca_eval_cot_gpt4_turbo_fn/configs.yaml b/src/alpaca_eval/evaluators_configs/alpaca_eval_cot_gpt4_turbo_fn/configs.yaml
index 20615b68..f344346d 100644
--- a/src/alpaca_eval/evaluators_configs/alpaca_eval_cot_gpt4_turbo_fn/configs.yaml
+++ b/src/alpaca_eval/evaluators_configs/alpaca_eval_cot_gpt4_turbo_fn/configs.yaml
@@ -14,6 +14,7 @@ alpaca_eval_cot_gpt4_turbo_fn:
         function:
           name: "make_partial_leaderboard"
           description: "Make a leaderboard of models given a list of the models ordered by the preference of their outputs."
+          strict: true
           parameters:
             type: "object"
             properties:
diff --git a/src/alpaca_eval/evaluators_configs/alpaca_eval_gpt4_fn/configs.yaml b/src/alpaca_eval/evaluators_configs/alpaca_eval_gpt4_fn/configs.yaml
index f16b20e5..ddb1772d 100644
--- a/src/alpaca_eval/evaluators_configs/alpaca_eval_gpt4_fn/configs.yaml
+++ b/src/alpaca_eval/evaluators_configs/alpaca_eval_gpt4_fn/configs.yaml
@@ -14,6 +14,7 @@ alpaca_eval_gpt4_fn:
         function:
           name: "make_leaderboard"
           description: "Make a leaderboard of models given a list of the models ordered by the preference of their outputs."
+          strict: true
           parameters:
             type: "object"
             properties:
diff --git a/src/alpaca_eval/evaluators_configs/alpaca_eval_gpt4_turbo_fn/configs.yaml b/src/alpaca_eval/evaluators_configs/alpaca_eval_gpt4_turbo_fn/configs.yaml
index 9896a327..08262cfa 100644
--- a/src/alpaca_eval/evaluators_configs/alpaca_eval_gpt4_turbo_fn/configs.yaml
+++ b/src/alpaca_eval/evaluators_configs/alpaca_eval_gpt4_turbo_fn/configs.yaml
@@ -14,6 +14,7 @@ alpaca_eval_gpt4_turbo_fn:
         function:
           name: "make_partial_leaderboard"
           description: "Make a leaderboard of models given a list of the models ordered by the preference of their outputs."
+          strict: true
           parameters:
             type: "object"
             properties:
diff --git a/src/alpaca_eval/evaluators_configs/chatgpt_fn/configs.yaml b/src/alpaca_eval/evaluators_configs/chatgpt_fn/configs.yaml
index d200aa7b..1eb22f22 100644
--- a/src/alpaca_eval/evaluators_configs/chatgpt_fn/configs.yaml
+++ b/src/alpaca_eval/evaluators_configs/chatgpt_fn/configs.yaml
@@ -14,6 +14,7 @@ chatgpt_fn:
         function:
           name: "print_best_model"
           description: "Print the best model given the preferred output."
+          strict: true
           parameters:
             type: "object"
             properties: