diff --git a/x/upgrade/spec/05_resources.md b/x/upgrade/spec/05_resources.md
new file mode 100644
index 0000000000..7652ca7cc4
--- /dev/null
+++ b/x/upgrade/spec/05_resources.md
@@ -0,0 +1,9 @@
+<!--
+order: 5
+-->
+
+# Resources
+
+A list of (external) resources to learn more about the `x/upgrade` module.
+
+- [Cosmos Dev Series: Cosmos Blockchain Upgrade](https://medium.com/web3-surfers/cosmos-dev-series-cosmos-sdk-based-blockchain-upgrade-b5e99181554c) - The blog post that explains how software upgrades work in detail.
\ No newline at end of file
diff --git a/x/upgrade/spec/README.md b/x/upgrade/spec/README.md
index 73ea2268ac..3fa09906ea 100644
--- a/x/upgrade/spec/README.md
+++ b/x/upgrade/spec/README.md
@@ -29,3 +29,4 @@ recover from.
     * [CLI](04_client.md#cli)
     * [REST](04_client.md#rest)
     * [gRPC](04_client.md#grpc)
+5. **[Resources](05_resources.md)**