diff --git a/CHANGELOG.md b/CHANGELOG.md
index adde174..fe361a8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 - ✨ — IPv4/IPv6 choice for checks, and choice for a dual-stack check (#69)
 - ⚡ — Mutualize check requests (#68)
 - ✨ — Ability to delay notification after X failures (#71)
+- 🐛 — Fix bug when changing IP version not removing tasks (#72)
 
 ## 0.6.1
 
diff --git a/argos/server/queries.py b/argos/server/queries.py
index 0e4656c..bea4bc9 100644
--- a/argos/server/queries.py
+++ b/argos/server/queries.py
@@ -83,13 +83,22 @@ async def count_results(db: Session):
     return db.query(Result).count()
 
 
-async def has_config_changed(db: Session, config: schemas.Config) -> bool:
+async def has_config_changed(db: Session, config: schemas.Config) -> bool:  # pylint: disable-msg=too-many-statements
     """Check if websites config has changed by using a hashsum and a config cache"""
     websites_hash = sha256(str(config.websites).encode()).hexdigest()
     conf_caches = db.query(ConfigCache).all()
     same_config = True
+    keys = [
+        "websites_hash",
+        "general_frequency",
+        "general_recheck_delay",
+        "general_retry_before_notification",
+        "general_ipv4",
+        "general_ipv6",
+    ]
     if conf_caches:
         for conf in conf_caches:
+            keys.remove(conf.name)
             match conf.name:
                 case "websites_hash":
                     if conf.val != websites_hash:
@@ -111,9 +120,62 @@ async def has_config_changed(db: Session, config: schemas.Config) -> bool:
                         same_config = False
                         conf.val = str(config.general.retry_before_notification)
                         conf.updated_at = datetime.now()
+                case "general_ipv4":
+                    if conf.val != str(config.general.ipv4):
+                        same_config = False
+                        conf.val = str(config.general.ipv4)
+                        conf.updated_at = datetime.now()
+                case "general_ipv6":
+                    if conf.val != str(config.general.ipv6):
+                        same_config = False
+                        conf.val = str(config.general.ipv6)
+                        conf.updated_at = datetime.now()
+
+        for i in keys:
+            match i:
+                case "websites_hash":
+                    c = ConfigCache(
+                        name="websites_hash",
+                        val=websites_hash,
+                        updated_at=datetime.now(),
+                    )
+                case "general_frequency":
+                    c = ConfigCache(
+                        name="general_frequency",
+                        val=str(config.general.frequency),
+                        updated_at=datetime.now(),
+                    )
+                case "general_recheck_delay":
+                    c = ConfigCache(
+                        name="general_recheck_delay",
+                        val=str(config.general.recheck_delay),
+                        updated_at=datetime.now(),
+                    )
+                case "general_retry_before_notification":
+                    c = ConfigCache(
+                        name="general_retry_before_notification",
+                        val=str(config.general.retry_before_notification),
+                        updated_at=datetime.now(),
+                    )
+                case "general_ipv4":
+                    c = ConfigCache(
+                        name="general_ipv4",
+                        val=str(config.general.ipv4),
+                        updated_at=datetime.now(),
+                    )
+                case "general_ipv6":
+                    c = ConfigCache(
+                        name="general_ipv6",
+                        val=str(config.general.ipv6),
+                        updated_at=datetime.now(),
+                    )
+            db.add(c)
 
         db.commit()
 
+        if keys:
+            return True
+
         if same_config:
             return False
 
@@ -136,10 +198,22 @@ async def has_config_changed(db: Session, config: schemas.Config) -> bool:
             val=str(config.general.retry_before_notification),
             updated_at=datetime.now(),
         )
+        gen_ipv4 = ConfigCache(
+            name="general_ipv4",
+            val=str(config.general.ipv4),
+            updated_at=datetime.now(),
+        )
+        gen_ipv6 = ConfigCache(
+            name="general_ipv6",
+            val=str(config.general.ipv6),
+            updated_at=datetime.now(),
+        )
         db.add(web_hash)
         db.add(gen_freq)
         db.add(gen_recheck)
         db.add(gen_retry_before_notif)
+        db.add(gen_ipv4)
+        db.add(gen_ipv6)
         db.commit()
 
     return True
@@ -173,12 +247,6 @@ async def update_from_config(db: Session, config: schemas.Config):  # pylint: di
             continue
 
         for ip_version in ["4", "6"]:
-            if ip_version == "4" and ipv4 is False:
-                continue
-
-            if ip_version == "6" and ipv6 is False:
-                continue
-
             for p in website.paths:
                 url = urljoin(domain, str(p.path))
                 for check_key, expected in p.checks:
@@ -194,8 +262,15 @@ async def update_from_config(db: Session, config: schemas.Config):  # pylint: di
                         )
                         .all()
                     )
+
+                    if (ip_version == "4" and ipv4 is False) or (
+                        ip_version == "6" and ipv6 is False
+                    ):
+                        continue
+
                     if existing_tasks:
                         existing_task = existing_tasks[0]
+
                         seen_tasks.append(existing_task.id)
 
                         if frequency != existing_task.frequency: