diff --git a/collection-ionic.yaml b/collection-ionic.yaml
index a100662..e102d2a 100644
--- a/collection-ionic.yaml
+++ b/collection-ionic.yaml
@@ -63,4 +63,4 @@ repositories:
   sdformat:
     type: git
     url: https://github.com/gazebosim/sdformat
-    version: main
+    version: sdf15
diff --git a/gz-launch8.yaml b/gz-launch8.yaml
index a100662..e102d2a 100644
--- a/gz-launch8.yaml
+++ b/gz-launch8.yaml
@@ -63,4 +63,4 @@ repositories:
   sdformat:
     type: git
     url: https://github.com/gazebosim/sdformat
-    version: main
+    version: sdf15
diff --git a/gz-physics8.yaml b/gz-physics8.yaml
index de2fd8e..2ac4212 100644
--- a/gz-physics8.yaml
+++ b/gz-physics8.yaml
@@ -27,4 +27,4 @@ repositories:
   sdformat:
     type: git
     url: https://github.com/gazebosim/sdformat
-    version: main
+    version: sdf15
diff --git a/gz-sensors9.yaml b/gz-sensors9.yaml
index 4214a93..41c9a13 100644
--- a/gz-sensors9.yaml
+++ b/gz-sensors9.yaml
@@ -43,4 +43,4 @@ repositories:
   sdformat:
     type: git
     url: https://github.com/gazebosim/sdformat
-    version: main
+    version: sdf15
diff --git a/gz-sim9.yaml b/gz-sim9.yaml
index c1a8820..4ef6599 100644
--- a/gz-sim9.yaml
+++ b/gz-sim9.yaml
@@ -59,4 +59,4 @@ repositories:
   sdformat:
     type: git
     url: https://github.com/gazebosim/sdformat
-    version: main
+    version: sdf15
diff --git a/sdformat15.yaml b/sdformat15.yaml
index 5142433..46d36e7 100644
--- a/sdformat15.yaml
+++ b/sdformat15.yaml
@@ -19,4 +19,4 @@ repositories:
   sdformat:
     type: git
     url: https://github.com/gazebosim/sdformat
-    version: main
+    version: sdf15