diff --git a/.github/workflows/push.yml b/.github/workflows/push.yml
index 05b2c1d49ef50..411e78251e4a4 100644
--- a/.github/workflows/push.yml
+++ b/.github/workflows/push.yml
@@ -63,11 +63,8 @@ jobs:
         node-version: [22.x]
         # Don't forget to update build-native-release
         python-version: [3.11]
-        transpile-worker-threads: [false, true]
       fail-fast: false
 
-    env:
-      CUBEJS_TRANSPILATION_WORKER_THREADS: ${{ matrix.transpile-worker-threads }}
     steps:
       - id: get-tag-out
         run: echo "$OUT"
@@ -121,16 +118,16 @@ jobs:
       - name: Lerna test
         run: yarn lerna run --concurrency 1 --stream --no-prefix unit
       - name: Fix lcov paths
-        if: (matrix.node-version == '22.x' && matrix.transpile-worker-threads == true)
+        if: (matrix.node-version == '22.x')
         run: |
           ./.github/actions/codecov-fix.sh
       - name: Combine all fixed LCOV files
-        if: (matrix.node-version == '22.x' && matrix.transpile-worker-threads == true)
+        if: (matrix.node-version == '22.x')
         run: |
           echo "" > ./combined-unit.lcov
           find ./packages -type f -name lcov.fixed.info -exec cat {} + >> ./combined-unit.lcov || true
       - name: Upload coverage artifact
-        if: (matrix.node-version == '22.x' && matrix.transpile-worker-threads == true)
+        if: (matrix.node-version == '22.x')
         uses: actions/upload-artifact@v4
         with:
           name: coverage-unit
diff --git a/docs/pages/product/configuration/reference/environment-variables.mdx b/docs/pages/product/configuration/reference/environment-variables.mdx
index be8295c305d9d..d0c5198adb777 100644
--- a/docs/pages/product/configuration/reference/environment-variables.mdx
+++ b/docs/pages/product/configuration/reference/environment-variables.mdx
@@ -1405,7 +1405,7 @@ code in worker threads.
 
 | Possible Values | Default in Development | Default in Production |
 | --------------- | ---------------------- | --------------------- |
-| `true`, `false` | `false`                | `false`               |
+| `true`, `false` | `true`                 | `true`                |
 
 <ReferenceBox>
 
diff --git a/packages/cubejs-backend-shared/src/env.ts b/packages/cubejs-backend-shared/src/env.ts
index 8491e3d7b5b81..ae5952f726af9 100644
--- a/packages/cubejs-backend-shared/src/env.ts
+++ b/packages/cubejs-backend-shared/src/env.ts
@@ -229,7 +229,7 @@ const variables: Record<string, (...args: any) => any> = {
     .default('true')
     .asBoolStrict(),
   transpilationWorkerThreads: () => get('CUBEJS_TRANSPILATION_WORKER_THREADS')
-    .default('false')
+    .default('true')
     .asBoolStrict(),
   allowNonStrictDateRangeMatching: () => get('CUBEJS_PRE_AGGREGATIONS_ALLOW_NON_STRICT_DATE_RANGE_MATCH')
     .default('true')