diff --git a/.buildkite/pipeline.yml b/.buildkite/pipeline.yml
index 2d69ec0e5..f6fc0e4a0 100644
--- a/.buildkite/pipeline.yml
+++ b/.buildkite/pipeline.yml
@@ -30,10 +30,10 @@ steps:
             julia:
               - "1.10"
               - "1.11"
-              - "nightly"
+              - "1.12-nightly"
           adjustments:
             - with:
-                julia: "nightly"
+                julia: "1.12-nightly"
               soft_fail: true
 
   # special tests
@@ -100,30 +100,6 @@ steps:
             build.message !~ /\[skip validation\]/ &&
             build.message !~ /\[skip special\]/
         timeout_in_minutes: 60
-      - label: "Opaque pointers"
-        plugins:
-          - JuliaCI/julia#v1:
-              version: "1.11"
-          - JuliaCI/julia-test#v1:
-              test_args: "--quickfail"
-          - JuliaCI/julia-coverage#v1:
-              codecov: true
-              dirs:
-                - src
-                - lib
-        env:
-          JULIA_LLVM_ARGS: '--opaque-pointers'
-        agents:
-          queue: "juliaecosystem"
-          os: "macos"
-          arch: "aarch64"
-        if: |
-          build.message =~ /\[only tests\]/ ||
-          build.message =~ /\[only special\]/ ||
-          build.message !~ /\[only/ && !build.pull_request.draft &&
-            build.message !~ /\[skip tests\]/ &&
-            build.message !~ /\[skip special\]/
-        timeout_in_minutes: 60
 
   - wait: ~
     continue_on_failure: true