diff --git a/data/special-requirements b/data/special-requirements
index a2ef727..152aaef 100644
--- a/data/special-requirements
+++ b/data/special-requirements
@@ -2,9 +2,9 @@ geos !alpine3.7 !alpine3.8 !alpine3.9 !alpine3.10
 memprof !alpine
 parallel zts
 parle !jessie
-pdo_sqlsrv !alpine3.7 !alpine3.8
+pdo_sqlsrv !alpine3.7 !alpine3.8 !arm
 pthreads zts
 sodium !jessie
-sqlsrv !alpine3.7 !alpine3.8 !7.1-alpine3.9 !7.1-alpine3.10
+sqlsrv !alpine3.7 !alpine3.8 !7.1-alpine3.9 !7.1-alpine3.10 !arm
 tensor !alpine3.15
 vips !alpine3.7 !alpine3.8 !alpine3.9 !jessie
diff --git a/scripts/update-readme b/scripts/update-readme
index 257ffb1..c37fb4c 100755
--- a/scripts/update-readme
+++ b/scripts/update-readme
@@ -174,6 +174,9 @@ generateSpecialRequirementsTable() {
 					zts)
 						generateSpecialRequirementsTable_chunk='Requires images with PHP compiled with thread-safety enabled (`zts`).'
 						;;
+					!arm)
+						generateSpecialRequirementsTable_chunk='Not available in ARM architectures.'
+						;;
 					!*)
 						generateSpecialRequirementsTable_chunk="$(printf 'Not available in `%s` docker images' "${generateSpecialRequirementsTable_chunk#!}")"
 						;;