diff --git a/requirements.txt b/requirements.txt
index 090c279f1..5bd5d7261 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,14 @@
+###############################################################################
+#
+# IMPORTANT:
+#
+# If runtime or build time dependencies are changed in this file, the committer
+# *must* ensure the DEB and RPM package maintainers are informed as soon as
+# possible.
+#
+###############################################################################
+
+
 ##############################################################################
 # NOTE: Any requirements with environment specifiers must be explicitly added
 #       to pkg/pip/setup_pip.py (in extras_require), otherwise they will be
diff --git a/web/package.json b/web/package.json
index 12b17fdf7..ba8d15282 100644
--- a/web/package.json
+++ b/web/package.json
@@ -1,4 +1,9 @@
 {
+  "//": [
+    "IMPORTANT:",
+    "If runtime or build time dependencies are changed in this file, the ",
+    "committer *must* ensure the DEB and RPM package maintainers are informed ",
+    "as soon as possible."],
   "license": "PostgreSQL",
   "devDependencies": {
     "@babel/core": "~7.3.4",
diff --git a/web/regression/requirements.txt b/web/regression/requirements.txt
index d897b4c95..ed516a1de 100644
--- a/web/regression/requirements.txt
+++ b/web/regression/requirements.txt
@@ -1,3 +1,13 @@
+###############################################################################
+#
+# IMPORTANT:
+#
+# If runtime or build time dependencies are changed in this file, the committer
+# *must* ensure the DEB and RPM package maintainers are informed as soon as
+# possible.
+#
+###############################################################################
+
 #####################################
 # Include all the common dependencies
 #####################################