diff --git a/openai/openai-common/runtime/src/main/java/io/quarkiverse/langchain4j/openai/OpenAiRestApi.java b/openai/openai-common/runtime/src/main/java/io/quarkiverse/langchain4j/openai/OpenAiRestApi.java
index 84e26966d..2f3a99199 100644
--- a/openai/openai-common/runtime/src/main/java/io/quarkiverse/langchain4j/openai/OpenAiRestApi.java
+++ b/openai/openai-common/runtime/src/main/java/io/quarkiverse/langchain4j/openai/OpenAiRestApi.java
@@ -373,6 +373,8 @@ private String inOneLine(MultiMap headers) {
                             headerValue = maskAuthorizationHeaderValue(headerValue);
                         } else if (headerKey.equals("api-key")) {
                             headerValue = maskApiKeyHeaderValue(headerValue);
+                        } else if (headerKey.equals("Set-Cookie")) {
+                            headerValue = maskCookieHeaderValue(headerValue);
                         }
                         return String.format("[%s: %s]", headerKey, headerValue);
                     })
@@ -408,6 +410,19 @@ private static String maskApiKeyHeaderValue(String apiKeyHeaderValue) {
                 return "Failed to mask the API key.";
             }
         }
+
+        private static String maskCookieHeaderValue(String cookieHeaderValue) {
+            try {
+                if (cookieHeaderValue.length() <= 4) {
+                    return cookieHeaderValue;
+                }
+                return cookieHeaderValue.substring(0, 2)
+                        + "..."
+                        + cookieHeaderValue.substring(cookieHeaderValue.length() - 2);
+            } catch (Exception e) {
+                return "Failed to mask the cookie value.";
+            }
+        }
     }
 
     class ApiMetadata {