diff --git a/.circleci/config.yml b/.circleci/config.yml
index 596da221fa85..4c67a2a010a0 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -593,19 +593,19 @@ workflows:
           requires:
             - unit-tests
       - create-sandboxes:
-          parallelism: 20
+          parallelism: 19
           requires:
             - build
       - build-sandboxes:
-          parallelism: 20
+          parallelism: 19
           requires:
             - create-sandboxes
       - chromatic-sandboxes:
-          parallelism: 18
+          parallelism: 17
           requires:
             - build-sandboxes
       - e2e-production:
-          parallelism: 18
+          parallelism: 17
           requires:
             - build-sandboxes
       - e2e-dev:
@@ -613,7 +613,7 @@ workflows:
           requires:
             - create-sandboxes
       - test-runner-production:
-          parallelism: 18
+          parallelism: 17
           requires:
             - build-sandboxes
       - bench:
@@ -647,22 +647,22 @@ workflows:
           requires:
             - build
       - create-sandboxes:
-          parallelism: 34
+          parallelism: 33
           requires:
             - build
       # - smoke-test-sandboxes: # disabled for now
       #     requires:
       #       - create-sandboxes
       - build-sandboxes:
-          parallelism: 34
+          parallelism: 33
           requires:
             - create-sandboxes
       - chromatic-sandboxes:
-          parallelism: 32
+          parallelism: 31
           requires:
             - build-sandboxes
       - e2e-production:
-          parallelism: 32
+          parallelism: 31
           requires:
             - build-sandboxes
       - e2e-dev:
@@ -670,7 +670,7 @@ workflows:
           requires:
             - create-sandboxes
       - test-runner-production:
-          parallelism: 32
+          parallelism: 31
           requires:
             - build-sandboxes
       # TODO: reenable once we find out the source of flakyness