diff --git a/administration/configuring-fluent-bit/classic-mode/configuration-file.md b/administration/configuring-fluent-bit/classic-mode/configuration-file.md
index 01091dc37..bf1c12ebb 100644
--- a/administration/configuring-fluent-bit/classic-mode/configuration-file.md
+++ b/administration/configuring-fluent-bit/classic-mode/configuration-file.md
@@ -35,6 +35,7 @@ The `Service` section defines global properties of the service. The following ke
 | `scheduler.cap`   | Set a maximum retry time in seconds. Supported in v1.8.7 and greater. | `2000` |
 | `scheduler.base`  | Set a base of exponential backoff. Supported in v1.8.7 and greater. | `5` |
 | `json.convert_nan_to_null` | If enabled, `NaN` converts to `null` when Fluent Bit converts `msgpack` to `json`. | `false` |
+| `json.escape_unicode` | Controls how Fluent Bit serializes non‑ASCII / multi‑byte Unicode characters in JSON strings. When enabled, Unicode characters are escaped as `\uXXXX` sequences (characters outside BMP become surrogate pairs). When disabled, Fluent Bit emits raw UTF‑8 bytes. | `true` |
 | `sp.convert_from_str_to_num` | If enabled, Stream processor converts from number string to number type. | `true` |
 | `windows.maxstdio` | If specified, the limit of stdio is adjusted. Only provided for Windows. From 512 to 2048 is allowed. | `512` |
 
diff --git a/administration/configuring-fluent-bit/yaml/configuration-file.md b/administration/configuring-fluent-bit/yaml/configuration-file.md
index 8edf5407e..f63264662 100644
--- a/administration/configuring-fluent-bit/yaml/configuration-file.md
+++ b/administration/configuring-fluent-bit/yaml/configuration-file.md
@@ -81,6 +81,7 @@ The `service` section defines the global properties of the service. The Service
 | `scheduler.cap`   | Set a maximum retry time in seconds. Supported from v1.8.7. | `2000` |
 | `scheduler.base`  | Sets the base of exponential backoff. Supported from v1.8.7. | `5` |
 | `json.convert_nan_to_null` | If enabled, NaN is converted to null when Fluent Bit converts `msgpack` to JSON. | `false` |
+| `json.escape_unicode` | Controls how Fluent Bit serializes non‑ASCII / multi‑byte Unicode characters in JSON strings. When enabled, Unicode characters are escaped as `\uXXXX` sequences (characters outside BMP become surrogate pairs). When disabled, Fluent Bit emits raw UTF‑8 bytes. | `true` |
 | `sp.convert_from_str_to_num` | If enabled, Stream processor converts from number string to number type. | `true` |
 | `windows.maxstdio` | If specified, the limit of stdio is adjusted. Only provided for Windows. From 512 to 2048 is allowed. | `512` |
 
diff --git a/administration/configuring-fluent-bit/yaml/service-section.md b/administration/configuring-fluent-bit/yaml/service-section.md
index ffa6581db..05049e093 100644
--- a/administration/configuring-fluent-bit/yaml/service-section.md
+++ b/administration/configuring-fluent-bit/yaml/service-section.md
@@ -21,6 +21,7 @@ The `service` section defines global properties of the service. The available co
 | `scheduler.cap` | Sets a maximum retry time in seconds. Supported in v1.8.7 and greater.                                                                                                                                                                                                                                                                                                                                                                               | `2000` |
 | `scheduler.base` | Sets the base of exponential backoff. Supported in v1.8.7 and greater.                                                                                                                                                                                                                                                                                                                                                                               | `5` |
 | `json.convert_nan_to_null` | If enabled, `NaN` is converted to `null` when Fluent Bit converts `msgpack` to `json`.                                                                                                                                                                                                                                                                                                                                                               | `false` |
+| `json.escape_unicode` | Controls how Fluent Bit serializes non‑ASCII / multi‑byte Unicode characters in JSON strings. When enabled, Unicode characters are escaped as `\uXXXX` sequences (characters outside BMP become surrogate pairs). When disabled, Fluent Bit emits raw UTF‑8 bytes. | `true` |
 | `sp.convert_from_str_to_num` | If enabled, the Stream Processor converts strings that represent numbers to a numeric type.                                                                                                                                                                                                                                                                                                                                                          | `true` |
 
 ## Configuration example