diff --git a/README.md b/README.md
index 3f311ebe..2f518f82 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,12 @@
 Open Source REST API for launch, rocket, core, capsule, starlink, launchpad, and landing pad data.
 </h3>
 
+<h1 align="center">Deprecation warning</h1>
+
+<h3 align="center">
+This API is now deprecated and the data is currently not being updated. See <a href="https://github.com/r-spacex/SpaceX-API/issues/1243">here</a> for details.
+</h3>
+
 <p align="center">
 <a href="https://github.com/r-spacex/SpaceX-API/actions?query=workflow%3ATest"><img src="https://img.shields.io/github/workflow/status/r-spacex/SpaceX-API/Test?style=flat-square"></a>
 <a href="https://hub.docker.com/r/jakewmeyer/spacex-api/"><img src="https://img.shields.io/docker/pulls/jakewmeyer/spacex-api?style=flat-square"></a>
diff --git a/docs/README.md b/docs/README.md
index 7b06fa95..dff06fca 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -1,4 +1,8 @@
-# r/SpaceX API Docs
+# Deprecation warning
+
+This API is now deprecated and the data is currently not being updated. See https://github.com/r-spacex/SpaceX-API/issues/1243
+
+# Deprecated r/SpaceX API Docs
 
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