diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -33,6 +33,8 @@
 
 Change the `ver` to match the desired version and leave the `sha256`. Then let `ob run` fail with the expected `sha256` and update the value accordingly.
 
+NOTE: It may be necessary to run `nix-collect-garbage` to clear the cache before `ob run`.
+
 #### GitHub
 
 As per the [Obelisk FAQ](https://github.com/obsidiansystems/obelisk/blob/master/FAQ.md#how-do-i-declare-a-new-haskell-dependency), modify `default.nix` to look like:
@@ -56,6 +58,8 @@
 ```
 
 Change the `rev` to match the latest commit hash and leave the `sha256`. Then let `ob run` fail with the expected `sha256` and update the value accordingly.
+
+NOTE: It may be necessary to run `nix-collect-garbage` to clear the cache before `ob run`.
 
 ### Get Ace Editor
 
diff --git a/reflex-dom-ace.cabal b/reflex-dom-ace.cabal
--- a/reflex-dom-ace.cabal
+++ b/reflex-dom-ace.cabal
@@ -1,6 +1,6 @@
 cabal-version: 1.24
 Name: reflex-dom-ace
-version: 0.3.0.2
+version: 0.3.0.3
 Synopsis: Basic support for using the Ace editor with Reflex.
 Description:
   Provides basic support for using the Ace editor with Reflex-DOM web apps.