diff --git a/.all-contributorsrc b/.all-contributorsrc
index 6982b19ee42..a8bba02a3a4 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -1,130 +1,139 @@
 {
-	"projectName": "python-deadlines",
-	"projectOwner": "JesperDramsch",
-	"skipCi": true,
-	"files": [
-		"README.md",
-		"CONTRIBUTING.md"
-	],
-	"imageSize": 100,
-	"commitType": "docs",
-	"commitConvention": "angular",
-	"contributorsPerLine": 7,
-	"types": {
-		"conference": {
-			"symbol": "📆",
-			"description": "Python conference (Added or updated)",
-			"link": "#conference-<%= contributor.login %>"
-		}
-	},
-	"contributors": [
-		{
-			"login": "JesperDramsch",
-			"name": "Jesper Dramsch",
-			"avatar_url": "https://avatars.githubusercontent.com/u/2620316?v=4",
-			"profile": "http://dramsch.net",
-			"contributions": [
-				"a11y",
-				"bug",
-				"blog",
-				"code",
-				"conference",
-				"content",
-				"doc",
-				"design",
-				"financial",
-				"ideas",
-				"infra",
-				"promotion",
-				"review",
-				"security",
-				"tool",
-				"translation",
-				"talk"
-			]
-		},
-		{
-			"login": "abhshkdz",
-			"name": "Abhishek Das",
-			"avatar_url": "https://avatars.githubusercontent.com/u/1156489?v=4",
-			"profile": "https://abhishekdas.com/",
-			"contributions": [
-				"code"
-			]
-		},
-		{
-			"login": "john-sandall",
-			"name": "John Sandall",
-			"avatar_url": "https://avatars.githubusercontent.com/u/2884159?v=4",
-			"profile": "https://coefficient.ai",
-			"contributions": [
-				"conference",
-				"bug"
-			]
-		},
-		{
-			"login": "thibaudcolas",
-			"name": "Thibaud Colas",
-			"avatar_url": "https://avatars.githubusercontent.com/u/877585?v=4",
-			"profile": "https://thib.me/",
-			"contributions": [
-				"conference"
-			]
-		},
-		{
-			"login": "tankala",
-			"name": "Tankala Ashok",
-			"avatar_url": "https://avatars.githubusercontent.com/u/29096822?v=4",
-			"profile": "http://tanka.la",
-			"contributions": [
-				"conference"
-			]
-		},
-		{
-			"login": "RCdeWit",
-			"name": "Rob de Wit",
-			"avatar_url": "https://avatars.githubusercontent.com/u/7165065?v=4",
-			"profile": "http://robdewit.nl",
-			"contributions": [
-				"conference"
-			]
-		},
-		{
-			"login": "takanory",
-			"name": "Takanori Suzuki",
-			"avatar_url": "https://avatars.githubusercontent.com/u/988241?v=4",
-			"profile": "https://slides.takanory.net/",
-			"contributions": [
-				"conference"
-			]
-		},
-		{
-			"login": "alanderex",
-			"name": "Alexander CS Hendorf",
-			"avatar_url": "https://avatars.githubusercontent.com/u/1356401?v=4",
-			"profile": "https://github.com/alanderex",
-			"contributions": [
-				"conference"
-			]
-		},
-		{
-			"login": "radujica",
-			"name": "Radu",
-			"avatar_url": "https://avatars.githubusercontent.com/u/8166962?v=4",
-			"profile": "https://github.com/radujica",
-			"contributions": [
-				"bug"
-			]
-		},
-		{
-			"login": "isabelizimm",
-			"name": "Isabel Zimmerman",
-			"avatar_url": "https://avatars.githubusercontent.com/u/54685329?v=4",
-			"profile": "http://isabelizimm.me",
-			"contributions": [
-				"bug"
-			]
-		}
-	],
-	"repoType": "github"
+  "projectName": "python-deadlines",
+  "projectOwner": "JesperDramsch",
+  "skipCi": true,
+  "files": [
+    "README.md",
+    "CONTRIBUTING.md"
+  ],
+  "imageSize": 100,
+  "commitType": "docs",
+  "commitConvention": "angular",
+  "contributorsPerLine": 7,
+  "types": {
+    "conference": {
+      "symbol": "📆",
+      "description": "Python conference (Added or updated)",
+      "link": "#conference-<%= contributor.login %>"
+    }
+  },
+  "contributors": [
+    {
+      "login": "JesperDramsch",
+      "name": "Jesper Dramsch",
+      "avatar_url": "https://avatars.githubusercontent.com/u/2620316?v=4",
+      "profile": "http://dramsch.net",
+      "contributions": [
+        "a11y",
+        "bug",
+        "blog",
+        "code",
+        "conference",
+        "content",
+        "doc",
+        "design",
+        "financial",
+        "ideas",
+        "infra",
+        "promotion",
+        "review",
+        "security",
+        "tool",
+        "translation",
+        "talk"
+      ]
+    },
+    {
+      "login": "abhshkdz",
+      "name": "Abhishek Das",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1156489?v=4",
+      "profile": "https://abhishekdas.com/",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "john-sandall",
+      "name": "John Sandall",
+      "avatar_url": "https://avatars.githubusercontent.com/u/2884159?v=4",
+      "profile": "https://coefficient.ai",
+      "contributions": [
+        "conference",
+        "bug"
+      ]
+    },
+    {
+      "login": "thibaudcolas",
+      "name": "Thibaud Colas",
+      "avatar_url": "https://avatars.githubusercontent.com/u/877585?v=4",
+      "profile": "https://thib.me/",
+      "contributions": [
+        "conference"
+      ]
+    },
+    {
+      "login": "tankala",
+      "name": "Tankala Ashok",
+      "avatar_url": "https://avatars.githubusercontent.com/u/29096822?v=4",
+      "profile": "http://tanka.la",
+      "contributions": [
+        "conference"
+      ]
+    },
+    {
+      "login": "RCdeWit",
+      "name": "Rob de Wit",
+      "avatar_url": "https://avatars.githubusercontent.com/u/7165065?v=4",
+      "profile": "http://robdewit.nl",
+      "contributions": [
+        "conference"
+      ]
+    },
+    {
+      "login": "takanory",
+      "name": "Takanori Suzuki",
+      "avatar_url": "https://avatars.githubusercontent.com/u/988241?v=4",
+      "profile": "https://slides.takanory.net/",
+      "contributions": [
+        "conference"
+      ]
+    },
+    {
+      "login": "alanderex",
+      "name": "Alexander CS Hendorf",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1356401?v=4",
+      "profile": "https://github.com/alanderex",
+      "contributions": [
+        "conference"
+      ]
+    },
+    {
+      "login": "radujica",
+      "name": "Radu",
+      "avatar_url": "https://avatars.githubusercontent.com/u/8166962?v=4",
+      "profile": "https://github.com/radujica",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "isabelizimm",
+      "name": "Isabel Zimmerman",
+      "avatar_url": "https://avatars.githubusercontent.com/u/54685329?v=4",
+      "profile": "http://isabelizimm.me",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "jeroenjanssens",
+      "name": "Jeroen Janssens",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1368256?v=4",
+      "profile": "https://jeroenjanssens.com",
+      "contributions": [
+        "conconference"
+      ]
+    }
+  ],
+  "repoType": "github"
 }
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 89953c7a7b1..5e73fe3c43a 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -193,6 +193,7 @@ Example:
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/alanderex"><img src="https://avatars.githubusercontent.com/u/1356401?v=4?s=100" width="100px;" alt="Alexander CS Hendorf"/><br /><sub><b>Alexander CS Hendorf</b></sub></a><br /><a href="#conference-alanderex" title="Python conference (Added or updated)">📆</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/radujica"><img src="https://avatars.githubusercontent.com/u/8166962?v=4?s=100" width="100px;" alt="Radu"/><br /><sub><b>Radu</b></sub></a><br /><a href="https://github.com/JesperDramsch/python-deadlines/issues?q=author%3Aradujica" title="Bug reports">🐛</a></td>
       <td align="center" valign="top" width="14.28%"><a href="http://isabelizimm.me"><img src="https://avatars.githubusercontent.com/u/54685329?v=4?s=100" width="100px;" alt="Isabel Zimmerman"/><br /><sub><b>Isabel Zimmerman</b></sub></a><br /><a href="https://github.com/JesperDramsch/python-deadlines/issues?q=author%3Aisabelizimm" title="Bug reports">🐛</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://jeroenjanssens.com"><img src="https://avatars.githubusercontent.com/u/1368256?v=4?s=100" width="100px;" alt="Jeroen Janssens"/><br /><sub><b>Jeroen Janssens</b></sub></a><br /><a href="#content-jeroenjanssens" title="Content">🖋</a></td>
     </tr>
   </tbody>
 </table>
diff --git a/README.md b/README.md
index 2095488518c..768b1b00c44 100644
--- a/README.md
+++ b/README.md
@@ -150,6 +150,7 @@ I mainly run the `main.py` and `sort_yaml.py` to get new entries and move old en
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/alanderex"><img src="https://avatars.githubusercontent.com/u/1356401?v=4?s=100" width="100px;" alt="Alexander CS Hendorf"/><br /><sub><b>Alexander CS Hendorf</b></sub></a><br /><a href="#conference-alanderex" title="Python conference (Added or updated)">📆</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/radujica"><img src="https://avatars.githubusercontent.com/u/8166962?v=4?s=100" width="100px;" alt="Radu"/><br /><sub><b>Radu</b></sub></a><br /><a href="https://github.com/JesperDramsch/python-deadlines/issues?q=author%3Aradujica" title="Bug reports">🐛</a></td>
       <td align="center" valign="top" width="14.28%"><a href="http://isabelizimm.me"><img src="https://avatars.githubusercontent.com/u/54685329?v=4?s=100" width="100px;" alt="Isabel Zimmerman"/><br /><sub><b>Isabel Zimmerman</b></sub></a><br /><a href="https://github.com/JesperDramsch/python-deadlines/issues?q=author%3Aisabelizimm" title="Bug reports">🐛</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://jeroenjanssens.com"><img src="https://avatars.githubusercontent.com/u/1368256?v=4?s=100" width="100px;" alt="Jeroen Janssens"/><br /><sub><b>Jeroen Janssens</b></sub></a><br /><a href="#content-jeroenjanssens" title="Content">🖋</a></td>
     </tr>
   </tbody>
 </table>