diff --git a/install-php-extensions b/install-php-extensions
index 28afad5..ccfbf5f 100755
--- a/install-php-extensions
+++ b/install-php-extensions
@@ -3170,8 +3170,18 @@ installRemoteModule() {
 					installRemoteModule_hardware=x86-64
 					;;
 			esac
-			printf 'Downloading relay v%s (%s)... ' "$installRemoteModule_version" "$installRemoteModule_hardware"
-			installRemoteModule_url="https://builds.r2.relay.so/v${installRemoteModule_version}/relay-v${installRemoteModule_version}-php${PHP_MAJDOTMIN_VERSION}-${DISTRO}-${installRemoteModule_hardware}.tar.gz"
+			if test "$DISTRO" = alpine; then
+				if test $DISTRO_MAJMIN_VERSION -lt 317; then
+					installRemoteModule_distro=alpine3.9
+				else
+					installRemoteModule_distro=alpine3.17
+				fi
+			else
+				installRemoteModule_distro="$DISTRO"
+			fi
+			# See https://relay.so/builds
+			installRemoteModule_url="https://builds.r2.relay.so/v${installRemoteModule_version}/relay-v${installRemoteModule_version}-php${PHP_MAJDOTMIN_VERSION}-${installRemoteModule_distro}-${installRemoteModule_hardware}.tar.gz"
+			printf 'Downloading relay v%s (%s) from %s... ' "$installRemoteModule_version" "$installRemoteModule_hardware" "$installRemoteModule_url"
 			installRemoteModule_src="$(getPackageSource $installRemoteModule_url)"
 			echo 'done.'
 			cp -- "$installRemoteModule_src/relay-pkg.so" "$PHP_EXTDIR/relay.so"