diff --git a/mxm_wifiex/wlan_src/mlan/mlan_decl.h b/mxm_wifiex/wlan_src/mlan/mlan_decl.h
index e2dd6a4..0347721 100644
--- a/mxm_wifiex/wlan_src/mlan/mlan_decl.h
+++ b/mxm_wifiex/wlan_src/mlan/mlan_decl.h
@@ -24,7 +24,7 @@
 #define _MLAN_DECL_H_
 
 /** MLAN release version */
-#define MLAN_RELEASE_VERSION "266.p3"
+#define MLAN_RELEASE_VERSION "266.p4"
 
 /** Re-define generic data types for MLAN/MOAL */
 /** Signed char (1-byte) */
diff --git a/mxm_wifiex/wlan_src/mlinux/mlan_decl.h b/mxm_wifiex/wlan_src/mlinux/mlan_decl.h
index e2dd6a4..0347721 100644
--- a/mxm_wifiex/wlan_src/mlinux/mlan_decl.h
+++ b/mxm_wifiex/wlan_src/mlinux/mlan_decl.h
@@ -24,7 +24,7 @@
 #define _MLAN_DECL_H_
 
 /** MLAN release version */
-#define MLAN_RELEASE_VERSION "266.p3"
+#define MLAN_RELEASE_VERSION "266.p4"
 
 /** Re-define generic data types for MLAN/MOAL */
 /** Signed char (1-byte) */