diff --git a/prereqs/pips/app_requirements.txt b/prereqs/pips/app_requirements.txt
index c70e7a01f5..e6d12f21cc 100644
--- a/prereqs/pips/app_requirements.txt
+++ b/prereqs/pips/app_requirements.txt
@@ -44,7 +44,7 @@ pkginfo==1.11.1
 psutil==6.0.0
 pycollada==0.8
 pydicom==2.4.4
-pynrrd==1.0.0
+pynrrd==1.1.3
 pyopenxr==1.1.4501
 tcia_utils==1.5.1
 PyOpenGL==3.1.9