diff --git a/Dockerfile.moth b/Dockerfile.moth
index ac5b9d9..0e8b7e9 100644
--- a/Dockerfile.moth
+++ b/Dockerfile.moth
@@ -1,6 +1,6 @@
 FROM neale/eris
 
-RUN apk --no-cache add lua5.2 lua5.3
+RUN apk --no-cache add lua5.1 lua5.2 lua5.3
 RUN ln -s lua5.2 /usr/bin/lua
 
 # Install MOTH. This could be less obtuse.
diff --git a/www/credits.html b/www/credits.html
index b6be5ec..ec3367f 100644
--- a/www/credits.html
+++ b/www/credits.html
@@ -92,6 +92,7 @@ window.addEventListener("load", init);
             <img src="images/logo1.png" alt="">
             <img src="images/logo2.png" alt="">
             <img src="images/logo3.png" alt="">
+            <img src="images/logo4.png" alt="">
 		</section>
 	</body>
 </html>
diff --git a/www/images/logo4.png b/www/images/logo4.png
new file mode 100644
index 0000000..0c4add8
Binary files /dev/null and b/www/images/logo4.png differ
diff --git a/www/index.html b/www/index.html
index 7662935..ad9f3db 100644
--- a/www/index.html
+++ b/www/index.html
@@ -71,6 +71,7 @@
             <img src="images/logo1.png" alt="">
             <img src="images/logo2.png" alt="">
             <img src="images/logo3.png" alt="">
+            <img src="images/logo4.png" alt="">
 		</section>
 	</body>
 </html>
diff --git a/www/register.html b/www/register.html
index b4e07b6..07fe93a 100644
--- a/www/register.html
+++ b/www/register.html
@@ -46,6 +46,7 @@
             <img src="images/logo1.png" alt="">
             <img src="images/logo2.png" alt="">
             <img src="images/logo3.png" alt="">
+            <img src="images/logo4.png" alt="">
 		</section>
 	</body>
 </html>
diff --git a/www/scoring.html b/www/scoring.html
index 8c0dc60..e85dea4 100644
--- a/www/scoring.html
+++ b/www/scoring.html
@@ -118,6 +118,7 @@
             <img src="images/logo1.png" alt="">
             <img src="images/logo2.png" alt="">
             <img src="images/logo3.png" alt="">
+            <img src="images/logo4.png" alt="">
 		</section>
 	</body>
 </html>