diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index 3fb4c1d..3ab1f46 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -117,9 +117,9 @@ jobs:
       run: swift test --filter NOTHING -c release
     - name: Test
       run: |
-        curl -LO https://www.apache.org/dyn/closer.lua/spark/spark-4.1.0-preview3/spark-4.1.0-preview3-bin-hadoop3.tgz?action=download
-        tar xvfz spark-4.1.0-preview3-bin-hadoop3.tgz && rm spark-4.1.0-preview3-bin-hadoop3.tgz
-        mv spark-4.1.0-preview3-bin-hadoop3 /tmp/spark
+        curl -LO https://dist.apache.org/repos/dist/dev/spark/v4.1.0-preview4-rc1-bin/spark-4.1.0-preview4-bin-hadoop3.tgz
+        tar xvfz spark-4.1.0-preview4-bin-hadoop3.tgz && rm spark-4.1.0-preview4-bin-hadoop3.tgz
+        mv spark-4.1.0-preview4-bin-hadoop3 /tmp/spark
         cd /tmp/spark/sbin
         ./start-connect-server.sh
         cd -
@@ -156,9 +156,9 @@ jobs:
       run: swift test --filter NOTHING -c release
     - name: Test
       run: |
-        curl -LO https://www.apache.org/dyn/closer.lua/spark/spark-4.1.0-preview3/spark-4.1.0-preview3-bin-hadoop3.tgz?action=download
-        tar xvfz spark-4.1.0-preview3-bin-hadoop3.tgz && rm spark-4.1.0-preview3-bin-hadoop3.tgz
-        mv spark-4.1.0-preview3-bin-hadoop3 /tmp/spark
+        curl -LO https://dist.apache.org/repos/dist/dev/spark/v4.1.0-preview4-rc1-bin/spark-4.1.0-preview4-bin-hadoop3.tgz
+        tar xvfz spark-4.1.0-preview4-bin-hadoop3.tgz && rm spark-4.1.0-preview4-bin-hadoop3.tgz
+        mv spark-4.1.0-preview4-bin-hadoop3 /tmp/spark
         cd /tmp/spark/sbin
         ./start-connect-server.sh
         cd -