diff --git a/doc/pcre2jit.3 b/doc/pcre2jit.3
index fab8366..95c4d3b 100644
--- a/doc/pcre2jit.3
+++ b/doc/pcre2jit.3
@@ -29,6 +29,7 @@ platforms:
 .sp
   ARM 32-bit (v5, v7, and Thumb2)
   ARM 64-bit
+  IBM s390x 64 bit
   Intel x86 32-bit and 64-bit
   MIPS 32-bit and 64-bit
   Power PC 32-bit and 64-bit