--- a/configure.in
+++ b/configure.in
@@ -3868,17 +3868,17 @@ dnl ====================================
 dnl = If NSPR was not detected in the system,
 dnl = use the one in the source tree (mozilla/nsprpub)
 dnl ========================================================
 MOZ_ARG_WITH_BOOL(system-nspr,
 [  --with-system-nspr      Use system installed NSPR],
     _USE_SYSTEM_NSPR=1 )
 
 if test -n "$_USE_SYSTEM_NSPR"; then
-    AM_PATH_NSPR(4.9.3, [MOZ_NATIVE_NSPR=1], [AC_MSG_ERROR([your don't have NSPR installed or your version is too old])])
+    AM_PATH_NSPR(4.9.4, [MOZ_NATIVE_NSPR=1], [AC_MSG_ERROR([your don't have NSPR installed or your version is too old])])
 fi
 
 if test -n "$MOZ_NATIVE_NSPR"; then
     _SAVE_CFLAGS=$CFLAGS
     CFLAGS="$CFLAGS $NSPR_CFLAGS"
     AC_TRY_COMPILE([#include "prtypes.h"],
                 [#ifndef PR_STATIC_ASSERT
                  #error PR_STATIC_ASSERT not defined or requires including prtypes.h