diff --git a/src/scripts/ext/blackfire.ps1 b/src/scripts/ext/blackfire.ps1
index cca3e4c6..49a9e04a 100644
--- a/src/scripts/ext/blackfire.ps1
+++ b/src/scripts/ext/blackfire.ps1
@@ -10,7 +10,11 @@ Function Add-Blackfire() {
     $no_dot_version = $version.replace('.', '')
     $extension_version = $extension.split('-')[1]
     if ($extension_version -notmatch "\S") {
-        $extension_version = (Invoke-RestMethod https://blackfire.io/api/v1/releases).probe.php
+        if($version -lt '7.0') {
+            $extension_version = '1.50.0'
+        } else {
+            $extension_version = (Invoke-RestMethod https://blackfire.io/api/v1/releases).probe.php
+        }
     }
     if (Test-Path $ext_dir\blackfire.dll) {
         Enable-PhpExtension -Extension blackfire -Path $php_dir
diff --git a/src/scripts/ext/blackfire.sh b/src/scripts/ext/blackfire.sh
index 027e7c5c..5eb28678 100644
--- a/src/scripts/ext/blackfire.sh
+++ b/src/scripts/ext/blackfire.sh
@@ -8,7 +8,11 @@ add_blackfire() {
   blackfire_ini_file="${pecl_file:-${ini_file[@]}}"
   if [ ! -e "${ext_dir:?}/blackfire.so" ]; then
     if [ "$extension_version" = "blackfire" ]; then
-      extension_version=$(get -s -n "" https://blackfire.io/api/v1/releases | grep -Eo 'php":"([0-9]+.[0-9]+.[0-9]+)' | cut -d '"' -f 3)
+      if [[ ${version:?} =~ 5.[3-6] ]]; then
+        extension_version='1.50.0'
+      else
+        extension_version=$(get -s -n "" https://blackfire.io/api/v1/releases | grep -Eo 'php":"([0-9]+.[0-9]+.[0-9]+)' | cut -d '"' -f 3)
+      fi
     fi
     get -q -n "${ext_dir:?}/blackfire.so" https://packages.blackfire.io/binaries/blackfire-php/"$extension_version"/blackfire-php-"$platform"_amd64-php-"$no_dot_version".so >/dev/null 2>&1
   fi