diff --git a/closure/goog/html/BUILD b/closure/goog/html/BUILD
index 998ce98972..c52c782059 100644
--- a/closure/goog/html/BUILD
+++ b/closure/goog/html/BUILD
@@ -13,6 +13,7 @@ closure_js_library(
 closure_js_library(
     name = "legacyconversions",
     srcs = ["legacyconversions.js"],
+    deprecation = "Please use 'safevalues/restricted/legacy' instead",
     lenient = True,
     deps = [
         ":safehtml",
@@ -127,6 +128,7 @@ closure_js_library(
     name = "testing",
     testonly = True,
     srcs = ["testing.js"],
+    deprecation = "Please use 'safevalues/testing/conversions' instead",
     lenient = True,
     deps = [
         ":safehtml",
@@ -175,6 +177,7 @@ closure_js_library(
 closure_js_library(
     name = "uncheckedconversions",
     srcs = ["uncheckedconversions.js"],
+    deprecation = "Please use 'safevalues/restricted/reviewed' instead",
     lenient = True,
     deps = [
         ":safehtml",
diff --git a/closure/goog/html/sanitizer/BUILD b/closure/goog/html/sanitizer/BUILD
index c4b4b8c899..bcd9fb581e 100644
--- a/closure/goog/html/sanitizer/BUILD
+++ b/closure/goog/html/sanitizer/BUILD
@@ -62,6 +62,9 @@ closure_js_library(
 closure_js_library(
     name = "htmlsanitizer",
     srcs = ["htmlsanitizer.js"],
+    deprecation = "Please use sanitizeHtml, HtmlSanitizer or HtmlSanitizerBuilder from 'safevalues' instead. " +
+                  "Note: We are aware the safevalues sanitizer doesn't support more niche use cases (see b/298325699). " +
+                  "If you believe you fall in this case, please add a clear explanation to the CL adding you to the visibility allowlist so that we can best help you.",
     lenient = True,
     deps = [
         ":attributeallowlists",