diff --git a/dist/index.js b/dist/index.js
index cc2ddde..8f62b1d 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -1400,10 +1400,6 @@ async function run() {
     if (platform === 'windows-latest') {
       rubyPrefix = await windows.downloadExtractAndSetPATH(ruby)
     } else {
-      if (ruby.startsWith('jruby')) {
-        // Workaround for https://github.com/actions/virtual-environments/issues/242
-        core.exportVariable('CLASSPATH', '')
-      }
       rubyPrefix = await downloadAndExtract(platform, ruby)
       core.addPath(`${rubyPrefix}/bin`)
     }
diff --git a/index.js b/index.js
index 23d5d2d..5ae10bb 100644
--- a/index.js
+++ b/index.js
@@ -19,10 +19,6 @@ async function run() {
     if (platform === 'windows-latest') {
       rubyPrefix = await windows.downloadExtractAndSetPATH(ruby)
     } else {
-      if (ruby.startsWith('jruby')) {
-        // Workaround for https://github.com/actions/virtual-environments/issues/242
-        core.exportVariable('CLASSPATH', '')
-      }
       rubyPrefix = await downloadAndExtract(platform, ruby)
       core.addPath(`${rubyPrefix}/bin`)
     }