diff --git a/content/pages/AboutUs.md b/content/pages/AboutUs.md
index 8e0d3b6c2d51ef41fb2b73e782808ecd8f133db8..b4131a79b2ee692c8d35bfb50948677da9e62fb2 100644
--- a/content/pages/AboutUs.md
+++ b/content/pages/AboutUs.md
@@ -1,7 +1,7 @@
 Title: About Us
 Date: 2016-03-25
 Category: Page
-Ordinal:006
+Ordinal: 006
 
 About Us!
 The source code of this site is at <https://gitlab.com/pages/pelican>.
diff --git a/content/pages/Conclusiones.md b/content/pages/Conclusiones.md
index bb39155cb25428b7eee5a195100c169da7f90b6e..b9b3d5ef5f01beed265f5baa880c026a9833a17e 100644
--- a/content/pages/Conclusiones.md
+++ b/content/pages/Conclusiones.md
@@ -1,7 +1,7 @@
 Title: Conclusions
 Date: 2016-03-25
 Category: Page
-Ordinal:005
+Ordinal: 005
 
 This site is hosted on GitLab Pages!
 Conclusions
diff --git a/content/pages/Dataset.md b/content/pages/Dataset.md
index c43c1057ba794b99bee02b0b8c97fb3ae6481b02..9af946334a7d41d78a4105745cb1d7fa65515f79 100644
--- a/content/pages/Dataset.md
+++ b/content/pages/Dataset.md
@@ -1,7 +1,7 @@
 Title: Dataset
 Date: 2016-03-25
 Category: Page
-Ordinal:002
+Ordinal: 002
 
 This site is hosted on GitLab Pages!
 Datasets
diff --git a/content/pages/Experimentos.md b/content/pages/Experimentos.md
index a2c11ed992b45db3f173529f16a7b265e9271c17..3b7879245cb118306c2cfc775c3228bf066088cd 100644
--- a/content/pages/Experimentos.md
+++ b/content/pages/Experimentos.md
@@ -1,7 +1,7 @@
 Title: Experiments
 Date: 2016-03-25
 Category: Page
-Ordinal:004
+Ordinal: 004
 
 This site is hosted on GitLab Pages!
 Experiments
diff --git a/content/pages/Introduccion.md b/content/pages/Introduccion.md
index de6d28dfb5cfa92f538222950f0cb7bcc9f417c3..7bedd2718077c5ae76a0d04940ba3dcb97a933bd 100644
--- a/content/pages/Introduccion.md
+++ b/content/pages/Introduccion.md
@@ -1,7 +1,7 @@
 Title: Introduction
 Date: 2016-03-25
 Category: Page
-Ordinal:001
+Ordinal: 001
 
 This site is hosted on GitLab Pages!
 Introduction
diff --git a/content/pages/Metodos.md b/content/pages/Metodos.md
index cb03c94dec0fb7b6bad72367d10be2764214e77e..86e33c40dbd1f310d568f9aaa45f7126af145c65 100644
--- a/content/pages/Metodos.md
+++ b/content/pages/Metodos.md
@@ -1,7 +1,7 @@
 Title: Methods
 Date: 2016-03-25
 Category: Page
-Ordinal:003
+Ordinal: 003
 
 This site is hosted on GitLab Pages!
 Methods
diff --git a/requirements.txt b/requirements.txt
index d62a40b231fea53280caf8011b1e5a392ecf0915..9dfc620e4af69c8d487477c68514fdef645d905b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,5 @@
 pelican ~= 4.7
 markdown
 typogrify
+pybtex
+bs4
\ No newline at end of file