diff --git a/scripts/verify-swift15-ple.py b/scripts/verify-swift15-ple.py
index 069193f..71df63f 100755
--- a/scripts/verify-swift15-ple.py
+++ b/scripts/verify-swift15-ple.py
@@ -21,6 +21,7 @@ import sys
 SCALE = 1.9931793212890625e-04  # bf16 0x3951, the official plateau scale
 FP8_E4M3_MAX = 448.0
 
+import numpy as np
 gmax = 0.0
 gfile = ""
 over_cap = 0