diff --git a/insns/README.md b/insns/README.md
index 37bae7a..b8f5eae 100644
--- a/insns/README.md
+++ b/insns/README.md
@@ -46,6 +46,10 @@ _Note: This section is under development and will be updated as more classes are
     - `InsnSra`: SRA instruction
     - `InsnOr`: OR instruction
     - `InsnAnd`: AND instruction
+  - `InsnRV32IITypeShift`: RV32I I-Type Instruction (Shift Variation)
+    - `InsnSlli`: SLLI instruction
+    - `InsnSrli`: SRLI instruction
+    - `InsnSrai`: SRAI instruction
 
 ## Parameters