diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index fe7775a0..1c439ea4 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -115,7 +115,7 @@ jobs:
           php-version: ${{ matrix.php }}
           coverage: none
           extensions: embed, curl, redis, mbstring, ffi
-          ini-values: ffi.enable=1, precision=17, memory_limit=4G, error_reporting=E_ERROR|E_WARNING, display_errors=1, log_errors=0
+          ini-values: ffi.enable=1, phpy.enable_operator_overloading=0, precision=17, memory_limit=4G, error_reporting=E_ERROR|E_WARNING, display_errors=1, log_errors=0
           tools: composer:v2
 
       - name: Patch php_hash.h C++ compatibility
@@ -181,7 +181,7 @@ jobs:
           php-version: ${{ matrix.php }}
           coverage: none
           extensions: embed, curl, redis, mbstring, ffi
-          ini-values: ffi.enable=1, precision=17, memory_limit=4G, error_reporting=E_ERROR|E_WARNING, display_errors=1, log_errors=0
+          ini-values: ffi.enable=1, phpy.enable_operator_overloading=0, precision=17, memory_limit=4G, error_reporting=E_ERROR|E_WARNING, display_errors=1, log_errors=0
           tools: composer:v2
 
       - name: Patch php_hash.h C++ compatibility