diff --git a/README.md b/README.md
index e0d03cb..d8ed4d9 100644
--- a/README.md
+++ b/README.md
@@ -233,7 +233,7 @@ install-php-extensions @fix_letsencrypt
 | sysvmsg | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
 | sysvsem | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
 | sysvshm | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
-| tensor |  |  |  |  | ✓ | ✓ | ✓ | ✓ |  |
+| tensor[*](#special-requirements-for-tensor) |  |  |  |  | ✓ | ✓ | ✓ | ✓ |  |
 | tidy | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
 | timezonedb | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
 | uopz | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
@@ -339,6 +339,7 @@ Some extensions have special requirements:
 | <a name="special-requirements-for-pdo_sqlsrv"></a>pdo_sqlsrv | &bull; Not available in `alpine3.7` docker images<br />&bull; Not available in `alpine3.8` docker images<br />&bull; Not available in `bullseye` docker images |
 | <a name="special-requirements-for-pthreads"></a>pthreads | Requires images with PHP compiled with thread-safety enabled (`zts`). |
 | <a name="special-requirements-for-sqlsrv"></a>sqlsrv | &bull; Not available in `alpine3.7` docker images<br />&bull; Not available in `alpine3.8` docker images<br />&bull; Not available in `7.1-alpine3.9` docker images<br />&bull; Not available in `7.1-alpine3.10` docker images<br />&bull; Not available in `bullseye` docker images |
+| <a name="special-requirements-for-tensor"></a>tensor | Not available in `alpine3.15` docker images |
 | <a name="special-requirements-for-vips"></a>vips | &bull; Not available in `alpine3.7` docker images<br />&bull; Not available in `alpine3.8` docker images<br />&bull; Not available in `alpine3.9` docker images<br />&bull; Not available in `jessie` docker images |
 <!-- END OF SPECIAL REQUIREMENTS -->