diff --git a/flaky_repos.xml b/flaky_repos.xml
index bb5cef6..a091777 100644
--- a/flaky_repos.xml
+++ b/flaky_repos.xml
@@ -29,30 +29,38 @@
    These repositories do not need to be pinned to a specific commit SHA
    because their ebuilds already pin to a specific commit SHA. We just need
    to make sure that the commit SHA needed by the ebuild is reachable by the
-   revision written here (typically the default revision is good enough).
+   revision written here.
+
+   However, we still pin to a commit SHA to avoid generating a ton of erroneous
+   build numbers.
   -->
   <project path="src/third_party/autotest/files/server/cros/faft/fw-testing-configs"
            name="chromiumos/platform/fw-testing-configs"
+           revision="b42990c00a476a1ae48e6364bded4dca3f30e1bf"
            remote="chromium" />
   <project path="src/platform/tast"
            name="chromiumos/platform/tast"
+           revision="d046166708dcfe66d512919eb37e909b9dcc41ab"
            remote="chromium" />
   <project path="src/platform/tast-tests"
            name="chromiumos/platform/tast-tests"
+           revision="0a0f2956f90334d2ce9653b9668b4df829ebd5c9"
            remote="chromium" />
   <project path="src/platform/tast-tests/src/chromiumos/tast/remote/firmware/data/fw-testing-configs"
            name="chromiumos/platform/fw-testing-configs"
+           revision="b42990c00a476a1ae48e6364bded4dca3f30e1bf"
            remote="chromium" />
   <project path="src/platform/microbenchmarks"
            name="chromiumos/platform/microbenchmarks"
+           revision="a3c495a9f5657c3778e5179d1c1ba073ad26020b"
            remote="chromium" />
   <project path="src/third_party/hdctools"
            name="chromiumos/third_party/hdctools"
-           revision="refs/heads/main"
+           revision="7b054ecd7082a65582019df4ff29acb48f3b3c89"
            remote="chromium" />
   <project path="src/third_party/rootdev"
            name="chromiumos/third_party/rootdev"
-           revision="refs/heads/main"
+           revision="b2f37be7c25bc83b76f1b7063a4ef38b824dc4ef"
            remote="chromium" />
 
   <!--