diff --git a/assets_generation/resources/asm/opcodes.yml b/assets_generation/resources/asm/opcodes.yml
index 11aaff94..1b464b98 100644
--- a/assets_generation/resources/asm/opcodes.yml
+++ b/assets_generation/resources/asm/opcodes.yml
@@ -3821,3 +3821,10 @@ opcodes:
     params:
       - type: dword
     stack: pop
+
+  - code: 0xf961
+    params:
+      - type: reg_tup_ref
+        reg_tup:
+          - type: dword
+            access: write
diff --git a/src/core/data_formats/asm/opcodes.ts b/src/core/data_formats/asm/opcodes.ts
index acf51b6b..7b8c1dcd 100644
--- a/src/core/data_formats/asm/opcodes.ts
+++ b/src/core/data_formats/asm/opcodes.ts
@@ -7531,7 +7531,16 @@ export const OP_UNKNOWN_F961 = (OPCODES[0xf961] = new_opcode(
     0xf961,
     "unknown_f961",
     undefined,
-    [],
+    [
+        new_param(
+            {
+                kind: Kind.RegTupRef,
+                register_tuples: [new_param(TYPE_DWORD, undefined, ParamAccess.Write)],
+            },
+            undefined,
+            undefined,
+        ),
+    ],
     undefined,
 ));
 export const OP_UNKNOWN_F962 = (OPCODES[0xf962] = new_opcode(