diff --git a/.jenkins/Jenkinsfile b/.jenkins/Jenkinsfile
index 7cee6634a3..fd32596c64 100644
--- a/.jenkins/Jenkinsfile
+++ b/.jenkins/Jenkinsfile
@@ -164,16 +164,16 @@ def tasks() {
      //   (some buffer on the heaviest split under the 1h max is required, ref `timeout(…)` in `test(…)`)
     'cqlsh-test': [splits: 1],
     'fqltool-test': [splits: 1, size: 'small'],
-    'test-cdc': [splits: 8],
-    'test': [splits: 16],
-    'test-latest': [splits: 16],
-    'test-compression': [splits: 16],
+    'test-cdc': [splits: 20],
+    'test': [splits: 20],
+    'test-latest': [splits: 20],
+    'test-compression': [splits: 20],
     'stress-test': [splits: 1, size: 'small'],
     'test-burn': [splits: 2],
     'long-test': [splits: 4],
-    'test-oa': [splits: 16],
-    'test-system-keyspace-directory': [splits: 16],
-    'jvm-dtest': [splits: 12],
+    'test-oa': [splits: 20],
+    'test-system-keyspace-directory': [splits: 20],
+    'jvm-dtest': [splits: 16],
     'jvm-dtest-upgrade': [splits: 6],
     'simulator-dtest': [splits: 1, size: 'large'],
     'dtest': [splits: 64, size: 'large'],
@@ -182,10 +182,10 @@ def tasks() {
     'dtest-large': [splits: 6, size: 'large'],
     'dtest-large-novnode': [splits: 6, size: 'large'],
     'dtest-large-latest': [splits: 6, size: 'large'],
-    'dtest-upgrade': [splits: 128, size: 'large'],
-    'dtest-upgrade-novnode': [splits: 128, size: 'large'],
-    'dtest-upgrade-large': [splits: 32, size: 'large'],
-    'dtest-upgrade-novnode-large': [splits: 32, size: 'large'],
+    'dtest-upgrade': [splits: 160, size: 'large'],
+    'dtest-upgrade-novnode': [splits: 160, size: 'large'],
+    'dtest-upgrade-large': [splits: 40, size: 'large'],
+    'dtest-upgrade-novnode-large': [splits: 40, size: 'large'],
   ]
   testSteps.each() {
     it.value.put('type', 'test')