diff --git a/data/personen/bert-hubert.json b/data/personen/bert-hubert.json
index c08f808..500dd59 100644
--- a/data/personen/bert-hubert.json
+++ b/data/personen/bert-hubert.json
@@ -15,7 +15,7 @@
     "facebook": "",
     "github": "ahuPowerDNS",
     "instagram": "",
-    "linkedin": "bert-hubert-b05452",
+    "linkedin": "https://www.linkedin.com/in/bert-hubert-b05452/",
     "mastodon": "@bert_hubert@fosstodon.org",
     "mastodon_url": "https://fosstodon.org/@bert_hubert",
     "twitter": "bert_hu_bert"
diff --git a/data/personen/guido-van-rossum.json b/data/personen/guido-van-rossum.json
index fa006e9..ffaea81 100644
--- a/data/personen/guido-van-rossum.json
+++ b/data/personen/guido-van-rossum.json
@@ -19,7 +19,7 @@
     "facebook": "",
     "github": "",
     "instagram": "",
-    "linkedin": "guido-van-rossum-4a0756",
+    "linkedin": "https://www.linkedin.com/in/guido-van-rossum-4a0756/",
     "mastodon": "",
     "mastodon_url": "",
     "twitter": "gvanrossum"
diff --git a/data/personen/michael-boelen.json b/data/personen/michael-boelen.json
index 8993286..3ee8524 100644
--- a/data/personen/michael-boelen.json
+++ b/data/personen/michael-boelen.json
@@ -16,11 +16,12 @@
     "name": "Linux security blog",
     "url": "https://linux-audit.com/"
   }],
+  "sameas": "https://www.wikidata.org/wiki/Q52008175",
   "social": {
     "facebook": "",
     "github": "mboelen",
     "instagram": "",
-    "linkedin": "michael-boelen",
+    "linkedin": "https://www.linkedin.com/in/mboelen/",
     "mastodon": "@mboelen@mastodon.social",
     "mastodon_url": "https://mastodon.social/@mboelen",
     "twitter": "mboelen"
diff --git a/data/personen/ronny-lam.json b/data/personen/ronny-lam.json
index ada3892..f75c427 100644
--- a/data/personen/ronny-lam.json
+++ b/data/personen/ronny-lam.json
@@ -9,7 +9,7 @@
   "social": {
     "github": "RonnyLam",
     "instagram": "",
-    "linkedin": "ronnylam",
+    "linkedin": "https://www.linkedin.com/in/ronnylam/",
     "mastodon": "@ronnylam@mastodon.social",
     "mastodon_url": "https://mastodon.social/@ronnylam",
     "twitter": "RonnyLam"
diff --git a/data/personen/wietse-venema.json b/data/personen/wietse-venema.json
index d0d346e..30d786c 100644
--- a/data/personen/wietse-venema.json
+++ b/data/personen/wietse-venema.json
@@ -11,7 +11,7 @@
     "facebook": "",
     "github": "",
     "instagram": "",
-    "linkedin": "wietsevenema",
+    "linkedin": "https://www.linkedin.com/in/wietsevenema/",
     "mastodon": "",
     "mastodon_url": "",
     "twitter": ""