diff --git a/data/supported-extensions b/data/supported-extensions
index d9aeeb4..c308dbe 100644
--- a/data/supported-extensions
+++ b/data/supported-extensions
@@ -14,7 +14,7 @@ gd 5.5 5.6 7.0 7.1 7.2 7.3 7.4 8.0
 gettext 5.5 5.6 7.0 7.1 7.2 7.3 7.4 8.0
 gmagick 5.5 5.6 7.0 7.1 7.2 7.3 7.4
 gmp 5.5 5.6 7.0 7.1 7.2 7.3 7.4 8.0
-grpc 5.5 5.6 7.0 7.1 7.2 7.3 7.4
+grpc 5.5 5.6 7.0 7.1 7.2 7.3 7.4 8.0
 http 5.5 5.6 7.0 7.1 7.2 7.3 7.4
 igbinary 5.5 5.6 7.0 7.1 7.2 7.3 7.4 8.0
 imagick 5.5 5.6 7.0 7.1 7.2 7.3 7.4
diff --git a/install-php-extensions b/install-php-extensions
index ca3d047..5dc9014 100755
--- a/install-php-extensions
+++ b/install-php-extensions
@@ -1197,6 +1197,13 @@ installPECLModule() {
 				fi
 			fi
 			;;
+		grpc)
+			if test -z "$installPECLModule_version"; then
+				if test $PHP_MAJMIN_VERSION -le 506; then
+					installPECLModule_version=1.33.1
+				fi
+			fi
+			;;
 		http)
 			installPECLModule_module=pecl_http
 			if test -z "$installPECLModule_version"; then