diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 52adda33..85ced94c 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -13,10 +13,10 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        jdk: [17, 21, 23]
+        jdk: [21, 23]
         os: [ubuntu-latest, windows-latest]
       fail-fast: false
-      max-parallel: 6
+      max-parallel: 4
     timeout-minutes: 30
 
     steps: