diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index 2e446c0..1ae38de 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -27,8 +27,6 @@ jobs:
     strategy:
       matrix:
         java:
-          - '8.0.382'
-          - '11.0.21'
           - '17.0.9'
         scala:
           - '2.13.11'
@@ -57,4 +55,5 @@ jobs:
       - run: sbt scalafmtCheckAll scalafmtSbtCheck
 name: build_and_test
 on:
+  pull_request: {}
   push: {}
diff --git a/github-scala-build-and-test.dhall b/github-scala-build-and-test.dhall
index eb90a9a..6b3a096 100644
--- a/github-scala-build-and-test.dhall
+++ b/github-scala-build-and-test.dhall
@@ -3,7 +3,11 @@ let GithubActions =
         sha256:71df44892a17abca817cfb35e2612d117f7fceec55114a6eb76b65a7eea4e6f4
 
 let matrix =
-      toMap { java = [ "8.0.382", "11.0.21", "17.0.9" ], scala = [ "2.13.11" ] }
+      toMap { java = [
+-- "8.0.382",
+-- "11.0.21",
+ "17.0.9",
+ ], scala = [ "2.13.11" ] }
 
 let setup =
       [ GithubActions.steps.actions/checkout // { `with` = Some (toMap { submodules = "true" }) }
@@ -26,7 +30,7 @@ in  GithubActions.Workflow::{
     , name = "build_and_test"
     , on = GithubActions.On::{
       , push = Some GithubActions.Push::{=}
-      --, pull_request = Some GithubActions.PullRequest::{=}
+      , pull_request = Some GithubActions.PullRequest::{=}
       }
     , jobs = toMap
         { checks = GithubActions.Job::{