diff --git a/.github/workflows/publish-docker.yaml b/.github/workflows/publish-docker.yaml
index eb91e76..7cf9729 100644
--- a/.github/workflows/publish-docker.yaml
+++ b/.github/workflows/publish-docker.yaml
@@ -11,6 +11,8 @@ on:
 jobs:
   build:
     strategy:
+      # Don't overwhelm the toolchain server
+      max-parallel: 1
       matrix:
         sdk_nrf_branch:
           - main
diff --git a/.github/workflows/verify.yaml b/.github/workflows/verify.yaml
index 6cff1ef..75cc5c0 100644
--- a/.github/workflows/verify.yaml
+++ b/.github/workflows/verify.yaml
@@ -5,6 +5,8 @@ on: pull_request
 jobs:
   build:
     strategy:
+      # Don't overwhelm the toolchain server
+      max-parallel: 1
       matrix:
         sdk_nrf_branch:
           - main