diff --git a/src/providers/php/mod.rs b/src/providers/php/mod.rs
index 4ea492be1..85cb0af7c 100644
--- a/src/providers/php/mod.rs
+++ b/src/providers/php/mod.rs
@@ -226,9 +226,13 @@ impl PhpProvider {
         let composer_json: ComposerJson = app.read_json("composer.json")?;
         let version = PhpProvider::get_php_version(app)?;
         let mut extensions = Vec::new();
+        // ext-json is included by default in PHP >= 8.0 (and not available in Nix)
+        // ext-zend-opcache is included by default in PHP >= 5.5
+        let ignored_extensions = [String::from("ext-json"), String::from("ext-zend-opcache")];
         for extension in composer_json.require.keys() {
-            // ext-json is included by default in PHP >= 8.0 (and not available in Nix) so skip over it
-            if extension.starts_with("ext-") && (version == "7.4" || extension != "ext-json") {
+            if extension.starts_with("ext-")
+                && (version == "7.4" || !ignored_extensions.contains(extension))
+            {
                 extensions.push(
                     extension
                         .strip_prefix("ext-")