diff --git a/data/supported-extensions b/data/supported-extensions
index 5cf8417..89e93a8 100644
--- a/data/supported-extensions
+++ b/data/supported-extensions
@@ -11,6 +11,7 @@ decimal 7.0 7.1 7.2 7.3 7.4 8.0
 ds 7.0 7.1 7.2 7.3 7.4 8.0
 enchant 5.5 5.6 7.0 7.1 7.2 7.3 7.4 8.0
 ev 5.5 5.6 7.0 7.1 7.2 7.3 7.4 8.0
+excimer 7.1 7.2 7.3 7.4 8.0
 exif 5.5 5.6 7.0 7.1 7.2 7.3 7.4 8.0
 ffi 7.4 8.0
 gd 5.5 5.6 7.0 7.1 7.2 7.3 7.4 8.0
diff --git a/install-php-extensions b/install-php-extensions
index 8d21a3d..7df4576 100755
--- a/install-php-extensions
+++ b/install-php-extensions
@@ -1101,7 +1101,7 @@ setTargetTriplet() {
 #   The number of processors to be used
 getCompilationProcessorCount() {
 	case "$1" in
-		amqp | bcmath | bz2 | calendar | decimal | exif | gd | geospatial | gettext | gmagick | grpc | http | imagick | intl | mysqli | opcache | pcntl | pdo_mysql | protobuf | redis | ssh2 | soap | sockets | tidy | xdebug | xsl | yaml | zip)
+		amqp | bcmath | bz2 | calendar | decimal | excimer | exif | gd | geospatial | gettext | gmagick | grpc | http | imagick | intl | mysqli | opcache | pcntl | pdo_mysql | protobuf | redis | ssh2 | soap | sockets | tidy | xdebug | xsl | yaml | zip)
 			# These extensions support parallel compilation
 			getProcessorCount
 			;;