diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index f626cd72be15d..8a85d26c0eca4 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -82,10 +82,14 @@ jobs:
             pandas=$pyspark
             kubernetes=`./dev/is-changed.py -m kubernetes`
             sparkr=`./dev/is-changed.py -m sparkr`
+            buf=true
+            ui=true
           else
             pandas=false
             kubernetes=false
             sparkr=false
+            buf=false
+            ui=false
           fi
           # 'build' is always true for now.
           # It does not save significant time and most of PRs trigger the build.
@@ -99,8 +103,8 @@ jobs:
               \"docker-integration-tests\": \"false\",
               \"lint\" : \"true\",
               \"k8s-integration-tests\" : \"$kubernetes\",
-              \"buf\" : \"true\",
-              \"ui\" : \"true\",
+              \"buf\" : \"$buf\",
+              \"ui\" : \"$ui\",
             }"
           echo $precondition # For debugging
           # Remove `\n` to avoid "Invalid format" error
diff --git a/.github/workflows/build_java21.yml b/.github/workflows/build_java21.yml
index bfeedd4174cf5..a2fb0e6e2c1d5 100644
--- a/.github/workflows/build_java21.yml
+++ b/.github/workflows/build_java21.yml
@@ -47,5 +47,7 @@ jobs:
           "sparkr": "true",
           "tpcds-1g": "true",
           "docker-integration-tests": "true",
-          "k8s-integration-tests": "true"
+          "k8s-integration-tests": "true",
+          "buf": "true",
+          "ui": "true"
         }