diff --git a/src/text_generation/services/guardrails/reflexion_security_guidelines_service.py b/src/text_generation/services/guardrails/reflexion_security_guidelines_service.py
index 488558343..9cd58ec69 100644
--- a/src/text_generation/services/guardrails/reflexion_security_guidelines_service.py
+++ b/src/text_generation/services/guardrails/reflexion_security_guidelines_service.py
@@ -42,7 +42,7 @@ class ReflexionSecurityGuardrailsService(
         self.llm_configuration_introspection_service = llm_configuration_introspection_service
 
         # constants
-        self.COSINE_SIMILARITY_RISK_THRESHOLD = 0.5
+        self.COSINE_SIMILARITY_RISK_THRESHOLD = 0.75
 
         # set up semantic similarity service and supporting texts
         self.example_prompt_injection_completions = prompt_injection_example_service.get_all_completions()
diff --git a/src/text_generation/services/nlp/text_generation_completion_service.py b/src/text_generation/services/nlp/text_generation_completion_service.py
index 9648c036e..8e561b356 100644
--- a/src/text_generation/services/nlp/text_generation_completion_service.py
+++ b/src/text_generation/services/nlp/text_generation_completion_service.py
@@ -57,7 +57,7 @@ class TextGenerationCompletionService(
         self.reflexion_guardrails: AbstractGeneratedTextGuardrailService = reflexion_guardrails
 
         # constants
-        self.COSINE_SIMILARITY_RISK_THRESHOLD = 0.5
+        self.COSINE_SIMILARITY_RISK_THRESHOLD = 0.75
 
         # default guidelines settings
         self._use_guidelines = False