diff --git a/tox.ini b/tox.ini
index 424341f38c..906eeda31f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -61,8 +61,8 @@ setenv =
     COVERAGE_FILE = {env:COVERAGE_FILE:{toxworkdir}/.coverage.{envname}}
     ci: SNOWFLAKE_PYTEST_VERBOSITY = -vvv
     # Do not run doctests in parallel so coverage works
-    # Snowpark uses 36 workers to accelerate testing in merge gate
-    !doctest: SNOWFLAKE_PYTEST_PARALLELISM = -n 36
+    # Snowpark uses all available physical cores to accelerate testing in merge gate
+    !doctest: SNOWFLAKE_PYTEST_PARALLELISM = -n 128
     # Snowpark uses 4 workers for daily testing since some of its test jobs use weak MacOS instances.
     !doctest: SNOWFLAKE_PYTEST_DAILY_PARALLELISM = -n 6
     # Set test type, either notset, unit, integ, or both