diff --git a/ldvspec/requirements/base.txt b/ldvspec/requirements/base.txt
index 4bfeb5bfa8877c6936b47be6f5ccbda66ccd9797..45954f46e55c36134e02bec5a7006d63434827a9 100644
--- a/ldvspec/requirements/base.txt
+++ b/ldvspec/requirements/base.txt
@@ -9,3 +9,5 @@ pytz==2022.1
 whitenoise==5.0.1
 six==1.15.0
 fontawesome-free==5.15.2
+pyyaml==6.0
+uritemplate==4.1.1
\ No newline at end of file