diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 45fc1fd..1ff50f5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,7 +22,7 @@ jobs:
     name: Build and Test
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, macos-12]
         scala: [2.12.19, 2.13.13, 3.3.3]
         java: [temurin@8, temurin@11, temurin@17, temurin@21]
     runs-on: ${{ matrix.os }}
diff --git a/build.sbt b/build.sbt
index f3471cc..9b4912a 100644
--- a/build.sbt
+++ b/build.sbt
@@ -198,7 +198,7 @@ ThisBuild / githubWorkflowPublishTargetBranches :=
     RefPredicate.Equals(Ref.Branch("main"))
   )
 
-ThisBuild / githubWorkflowOSes := Seq("ubuntu-latest", "macos-latest")
+ThisBuild / githubWorkflowOSes := Seq("ubuntu-latest", "macos-12")
 
 ThisBuild / githubWorkflowJavaVersions := List(
   JavaSpec.temurin("8"),