diff --git a/3rdParty/V8/gypfiles/shim_headers.gypi b/3rdParty/V8/gypfiles/shim_headers.gypi
index 940211c2401c..a9c468057f81 100644
--- a/3rdParty/V8/gypfiles/shim_headers.gypi
+++ b/3rdParty/V8/gypfiles/shim_headers.gypi
@@ -62,7 +62,7 @@
       'outputs': [
         '<!@pymod_do_main(generate_shim_headers <@(generator_args) --outputs)',
       ],
-      'action': ['python',
+      'action': ['<(PYTHON_EXECUTABLE)',
                  '<(generator_path)',
                  '<@(generator_args)',
                  '--generate',
diff --git a/3rdParty/V8/gypfiles/v8.gyp b/3rdParty/V8/gypfiles/v8.gyp
index de92059d55a0..71820c515022 100644
--- a/3rdParty/V8/gypfiles/v8.gyp
+++ b/3rdParty/V8/gypfiles/v8.gyp
@@ -1408,7 +1408,7 @@
             '<(SHARED_INTERMEDIATE_DIR)/src/regexp/special-case.cc',
           ],
           'action': [
-            'python',
+            '<(PYTHON_EXECUTABLE)',
             '<(V8_ROOT)/tools/run.py',
             '<@(_inputs)',
             '<@(_outputs)',
@@ -1510,7 +1510,8 @@
             }],
           ],
           'action': [
-            'python', '<(V8_ROOT)/tools/testrunner/utils/dump_build_config_gyp.py',
+              '<(PYTHON_EXECUTABLE)',
+              '<(V8_ROOT)/tools/testrunner/utils/dump_build_config_gyp.py',
             '<@(v8_dump_build_config_args)',
           ],
         },
@@ -1546,7 +1547,7 @@
             '<(SHARED_INTERMEDIATE_DIR)/debug-support.cc',
           ],
           'action': [
-            'python',
+            '<(PYTHON_EXECUTABLE)',
             '<(V8_ROOT)/tools/gen-postmortem-metadata.py',
             '<@(_outputs)',
             '<@(heapobject_files)'