diff --git a/.github/workflows/build-android-x86_64.yml b/.github/workflows/build-android-x86_64.yml
index 6acbbd7af..100785699 100644
--- a/.github/workflows/build-android-x86_64.yml
+++ b/.github/workflows/build-android-x86_64.yml
@@ -2,7 +2,6 @@ on:
   schedule:
     - cron: "0 */12 * * *"
   workflow_dispatch:
-  push:
 jobs:
   # Wait for up to a minute for previous run to complete, abort if not done by then
   pre-ci:
diff --git a/.github/workflows/build-deploy-android-arm32.yml b/.github/workflows/build-deploy-android-arm32.yml
index 1f765d895..5390efc11 100644
--- a/.github/workflows/build-deploy-android-arm32.yml
+++ b/.github/workflows/build-deploy-android-arm32.yml
@@ -2,7 +2,6 @@ on:
   schedule:
     - cron: "0 */12 * * *"
   workflow_dispatch:
-  push:
 jobs:
   # Wait for up to a minute for previous run to complete, abort if not done by then
   pre-ci:
diff --git a/.github/workflows/build-deploy-android-arm64.yml b/.github/workflows/build-deploy-android-arm64.yml
index 95fd2b558..58d5dcdee 100644
--- a/.github/workflows/build-deploy-android-arm64.yml
+++ b/.github/workflows/build-deploy-android-arm64.yml
@@ -2,7 +2,6 @@ on:
   schedule:
     - cron: "0 */12 * * *"
   workflow_dispatch:
-  push:
 jobs:
   # Wait for up to a minute for previous run to complete, abort if not done by then
   pre-ci:
diff --git a/.github/workflows/build-deploy-linux-arm32.yml b/.github/workflows/build-deploy-linux-arm32.yml
index e0c3015b2..fc229f3fe 100644
--- a/.github/workflows/build-deploy-linux-arm32.yml
+++ b/.github/workflows/build-deploy-linux-arm32.yml
@@ -2,7 +2,6 @@ on:
   schedule:
     - cron: "0 */12 * * *"
   workflow_dispatch:
-  push:
 jobs:
   # Wait for up to a minute for previous run to complete, abort if not done by then
   pre-ci:
diff --git a/.github/workflows/build-deploy-linux-arm64.yml b/.github/workflows/build-deploy-linux-arm64.yml
index f4579eb24..65bb426b8 100644
--- a/.github/workflows/build-deploy-linux-arm64.yml
+++ b/.github/workflows/build-deploy-linux-arm64.yml
@@ -2,7 +2,6 @@ on:
   schedule:
     - cron: "0 */12 * * *"
   workflow_dispatch:
-  push:
 jobs:
   # Wait for up to a minute for previous run to complete, abort if not done by then
   pre-ci:
diff --git a/.github/workflows/build-deploy-linux-cuda-11.0.yml b/.github/workflows/build-deploy-linux-cuda-11.0.yml
index edb670b63..98ca27951 100644
--- a/.github/workflows/build-deploy-linux-cuda-11.0.yml
+++ b/.github/workflows/build-deploy-linux-cuda-11.0.yml
@@ -2,11 +2,10 @@ on:
   schedule:
     - cron: "0 */12 * * *"
   workflow_dispatch:
-  push:
 jobs:
   # Wait for up to a minute for previous run to complete, abort if not done by then
   pre-ci:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-16.04
     timeout-minutes: 1
     steps:
       - name: 'Block Concurrent Executions'
diff --git a/.github/workflows/build-deploy-linux-cuda-11.2.yml b/.github/workflows/build-deploy-linux-cuda-11.2.yml
index 3dbcfabdd..03e4752c0 100644
--- a/.github/workflows/build-deploy-linux-cuda-11.2.yml
+++ b/.github/workflows/build-deploy-linux-cuda-11.2.yml
@@ -2,11 +2,10 @@ on:
   schedule:
     - cron: "0 */12 * * *"
   workflow_dispatch:
-  push:
 jobs:
   # Wait for up to a minute for previous run to complete, abort if not done by then
   pre-ci:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-16.04
     timeout-minutes: 1
     steps:
       - name: 'Block Concurrent Executions'