diff --git a/_data/sources.yaml b/_data/sources.yaml
index 2926fe7..a7c9548 100644
--- a/_data/sources.yaml
+++ b/_data/sources.yaml
@@ -4,7 +4,7 @@ arxiv:
 
 hal:
     name: HAL
-    baseurl: http://hal.archives-ouvertes.fr/hal-
+    baseurl: https://hal.archives-ouvertes.fr/hal-
 
 doi:
     name: Journal
diff --git a/_data/submitted.yaml b/_data/submitted.yaml
index a182032..7441812 100644
--- a/_data/submitted.yaml
+++ b/_data/submitted.yaml
@@ -5,7 +5,7 @@
   title: "Crowding and queuing at exits and bottlenecks"
   links:
     - pdf: 2019/FJW_Bottlenecks_2019.pdf
-    - hal: 02371333
+    - hal: "02371333"
   id: 9
 
 - authors:
@@ -13,7 +13,7 @@
     - me
   title: "Non-Conforming Multiscale Finite Element Method for Stokes Flows in Heterogeneous Media. Part II: error estimates for periodic microstructure"
   links:
-    - arxiv: 1802.04389
+    - arxiv: "1802.04389"
   id: 6
 
 - authors:
@@ -21,8 +21,8 @@
     - vhn
   title: "Fractional Sobolev and Hardy-Littlewood-Sobolev inequalities"
   links:
-    - arxiv: 1404.1028
-    - hal: 00972035
+    - arxiv: "1404.1028"
+    - hal: "00972035"
   id: 5
 
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