diff --git a/docs/README.md b/docs/README.md
index 277d323357..49e01786cb 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -214,6 +214,9 @@ The following versioned modules are provided by dcrd repository:
* [gcs](https://github.com/decred/dcrd/tree/master/gcs) - Provides an API for
building and using Golomb-coded set filters useful for light clients such as
SPV wallets
+* [fees](https://github.com/decred/dcrd/tree/master/fees) - Provides methods for
+ tracking and estimating fee rates for new transactions to be mined into the
+ network
diff --git a/docs/assets/module_hierarchy.gv b/docs/assets/module_hierarchy.gv
index 9c751a924e..9640727151 100644
--- a/docs/assets/module_hierarchy.gv
+++ b/docs/assets/module_hierarchy.gv
@@ -23,6 +23,7 @@ digraph {
mining [label="mining" fillcolor=chartreuse]
peer [label="peer" fillcolor=khaki]
rpcclient [label="rpcclient" fillcolor=mediumseagreen]
+ fees [label="fees" fillcolor=darkolivegreen2]
dcrd [label="dcrd" fillcolor=chocolate]
{rank=same connmgr addrmgr hdkeychain peer rpcclient mempool}
@@ -51,6 +52,7 @@ digraph {
blockchain -> rpcclient [dir=back color=orchid]
dcrjson -> rpcclient [dir=back color=indianred]
+ fees -> dcrd [dir=back color=darkolivegreen2]
mempool -> dcrd [dir=back color=slategray]
certgen -> dcrd [dir=back color=darkkhaki]
addrmgr -> dcrd [dir=back color=lightsalmon]
diff --git a/docs/assets/module_hierarchy.svg b/docs/assets/module_hierarchy.svg
index 88a08943ea..981522da3f 100644
--- a/docs/assets/module_hierarchy.svg
+++ b/docs/assets/module_hierarchy.svg
@@ -4,25 +4,25 @@
-