diff --git a/doc/source/spelling_wordlist.txt b/doc/source/spelling_wordlist.txt
index a92cb92de6a9..f4fb76d34fa7 100644
--- a/doc/source/spelling_wordlist.txt
+++ b/doc/source/spelling_wordlist.txt
@@ -738,6 +738,7 @@ dstSRS
 dstType
 dt
 dT
+dtype
 DUnits
 dValue
 dve
@@ -2133,6 +2134,7 @@ Nummeraanduiding
 numnorth
 numpy
 Numpy
+NumPy
 numslope
 numwoodies
 nUpdatedFieldsCount