diff --git a/eng/pipelines/runtime.yml b/eng/pipelines/runtime.yml
index 9611a7e3a773c6..e6f3f681e91604 100644
--- a/eng/pipelines/runtime.yml
+++ b/eng/pipelines/runtime.yml
@@ -1772,7 +1772,7 @@ extends:
           jobParameters:
             testGroup: innerloop
             nameSuffix: Mono_Interpreter_LibrariesTests
-            buildArgs: -s mono+libs+libs.tests -c $(_BuildConfig) /p:ArchiveTests=true
+            buildArgs: -s mono+libs+libs.tests -rc Release -c $(_BuildConfig) /p:ArchiveTests=true
             timeoutInMinutes: 480
             # extra steps, run tests
             postBuildSteps:
@@ -1804,7 +1804,7 @@ extends:
           jobParameters:
             testGroup: innerloop
             nameSuffix: Mono_MiniJIT_LibrariesTests
-            buildArgs: -s mono+libs+libs.tests -c $(_BuildConfig) /p:ArchiveTests=true
+            buildArgs: -s mono+libs+libs.tests -rc Release -c $(_BuildConfig) /p:ArchiveTests=true
             timeoutInMinutes: 480
             # extra steps, run tests
             postBuildSteps: