diff --git a/docs/rl/ppo/experiment.html b/docs/rl/ppo/experiment.html
index fe584587..bf46a78b 100644
--- a/docs/rl/ppo/experiment.html
+++ b/docs/rl/ppo/experiment.html
@@ -86,7 +86,7 @@ It runs the <a href="../game.html">game environments on multiple processes</a> t
 <span class="lineno">19</span><span class="kn">from</span> <span class="nn">torch.distributions</span> <span class="kn">import</span> <span class="n">Categorical</span>
 <span class="lineno">20</span>
 <span class="lineno">21</span><span class="kn">from</span> <span class="nn">labml</span> <span class="kn">import</span> <span class="n">monit</span><span class="p">,</span> <span class="n">tracker</span><span class="p">,</span> <span class="n">logger</span><span class="p">,</span> <span class="n">experiment</span>
-<span class="lineno">22</span><span class="kn">from</span> <span class="nn">labml.internal.configs.dynamic_hyperparam</span> <span class="kn">import</span> <span class="n">FloatDynamicHyperParam</span>
+<span class="lineno">22</span><span class="kn">from</span> <span class="nn">labml.configs</span> <span class="kn">import</span> <span class="n">FloatDynamicHyperParam</span>
 <span class="lineno">23</span><span class="kn">from</span> <span class="nn">labml_helpers.module</span> <span class="kn">import</span> <span class="n">Module</span>
 <span class="lineno">24</span><span class="kn">from</span> <span class="nn">labml_nn.rl.game</span> <span class="kn">import</span> <span class="n">Worker</span>
 <span class="lineno">25</span><span class="kn">from</span> <span class="nn">labml_nn.rl.ppo</span> <span class="kn">import</span> <span class="n">ClippedPPOLoss</span><span class="p">,</span> <span class="n">ClippedValueFunctionLoss</span>
diff --git a/docs/sitemap.xml b/docs/sitemap.xml
index 14e5a78e..69ce9ce4 100644
--- a/docs/sitemap.xml
+++ b/docs/sitemap.xml
@@ -701,7 +701,7 @@
 
     <url>
       <loc>https://nn.labml.ai/rl/ppo/index.html</loc>
-      <lastmod>2021-03-05T16:30:00+00:00</lastmod>
+      <lastmod>2021-03-27T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
@@ -715,7 +715,7 @@
 
     <url>
       <loc>https://nn.labml.ai/rl/ppo/readme.html</loc>
-      <lastmod>2021-02-23T16:30:00+00:00</lastmod>
+      <lastmod>2021-03-27T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>