diff --git a/instrs.txt b/instrs.txt
index 1e0b8a8..bbdde02 100644
--- a/instrs.txt
+++ b/instrs.txt
@@ -334,7 +334,10 @@ ff/6                  M     GP     -      -      -      PUSH DEF64
 0f18/2                M     GP8    -      -      -      PREFETCH1
 0f18/3                M     GP8    -      -      -      PREFETCH2
 0f1f                  M     GP     -      -      -      NOP
-# 0f20, 0f21, 0f22, 0f23 are moves to/from control/debug registers
+NP.0f20               MR    GP     CR     -      -      MOV_C2G DEF64
+NP.0f21               MR    GP     DR     -      -      MOV_D2G DEF64
+NP.0f22               RM    CR     GP     -      -      MOV_G2C DEF64
+NP.0f23               RM    DR     GP     -      -      MOV_G2D DEF64
 0f30                  NP    -      -      -      -      WRMSR
 0f31                  NP    -      -      -      -      RDTSC
 0f32                  NP    -      -      -      -      RDMSR
diff --git a/parseinstrs.py b/parseinstrs.py
index ed5a203..8be83c4 100644
--- a/parseinstrs.py
+++ b/parseinstrs.py
@@ -95,6 +95,8 @@ OPKIND_LOOKUP = {
     "FPU": (0, 0, 4),
     "MEMZ": (0, 0, 0),
     "BND": (0, 0, 0),
+    "CR": (0, 0, 0),
+    "DR": (0, 0, 0),
 }
 
 class InstrDesc(namedtuple("InstrDesc", "mnemonic,flags,encoding")):