diff --git a/versionProperties/1.20.1.properties b/versionProperties/1.20.1.properties
index 2ca797e03..1cee448d6 100644
--- a/versionProperties/1.20.1.properties
+++ b/versionProperties/1.20.1.properties
@@ -23,7 +23,7 @@ fabric_api_version=0.90.4+1.20.1
     immersive_portals_version=
     canvas_version=
     
-    fabric_incompatibility_list={ "iris": "<1.8.0" }
+    fabric_incompatibility_list={ "iris": "<=1.7.4" }
     fabric_recommend_list={}
     
     # Fabric mod run
diff --git a/versionProperties/1.20.2.properties b/versionProperties/1.20.2.properties
index 22a6c999b..62e9b45f0 100644
--- a/versionProperties/1.20.2.properties
+++ b/versionProperties/1.20.2.properties
@@ -23,7 +23,7 @@ fabric_api_version=0.90.4+1.20.2
     immersive_portals_version=
     canvas_version=
     
-    fabric_incompatibility_list={ "iris": "<1.8.0" }
+    fabric_incompatibility_list={ "iris": "<=1.7.4" }
     fabric_recommend_list={}
     
     # Fabric mod run
diff --git a/versionProperties/1.20.4.properties b/versionProperties/1.20.4.properties
index fcdb71d85..b541c77a7 100644
--- a/versionProperties/1.20.4.properties
+++ b/versionProperties/1.20.4.properties
@@ -24,7 +24,7 @@ fabric_api_version=0.91.2+1.20.4
     immersive_portals_version=
     canvas_version=
     
-    fabric_incompatibility_list={ "iris": "<1.8.0" }
+    fabric_incompatibility_list={ "iris": "<=1.7.4" }
     fabric_recommend_list={}
     
     # Fabric mod run
diff --git a/versionProperties/1.20.6.properties b/versionProperties/1.20.6.properties
index cb506767e..73cbfb209 100644
--- a/versionProperties/1.20.6.properties
+++ b/versionProperties/1.20.6.properties
@@ -24,7 +24,7 @@ fabric_api_version=0.97.8+1.20.6
     immersive_portals_version=
     canvas_version=
     
-    fabric_incompatibility_list={ "iris": "<1.8.0" }
+    fabric_incompatibility_list={ "iris": "<=1.7.4" }
     fabric_recommend_list={}
     
     # Fabric mod run
diff --git a/versionProperties/1.21.1.properties b/versionProperties/1.21.1.properties
index 72fbee0f0..a79460b48 100644
--- a/versionProperties/1.21.1.properties
+++ b/versionProperties/1.21.1.properties
@@ -24,7 +24,7 @@ fabric_api_version=0.100.1+1.21
     immersive_portals_version=
     canvas_version=
     
-    fabric_incompatibility_list={ "iris": "<1.8.0" }
+    fabric_incompatibility_list={ "iris": "<=1.7.4" }
     fabric_recommend_list={}
     
     # Fabric mod run