diff --git a/tests/bundles/focal-xena.yaml b/tests/bundles/focal-xena.yaml
index 5c0b9967..017bedcb 100644
--- a/tests/bundles/focal-xena.yaml
+++ b/tests/bundles/focal-xena.yaml
@@ -157,8 +157,7 @@ applications:
     channel: yoga/edge
 
   prometheus2:
-# Pin prometheus2 charm version Bug #1891942
-    charm: cs:prometheus2-18
+    charm: ch:prometheus2
     num_units: 1
     to:
       - '16'
diff --git a/tests/bundles/focal-yoga.yaml b/tests/bundles/focal-yoga.yaml
index 8599ac9f..823cebdc 100644
--- a/tests/bundles/focal-yoga.yaml
+++ b/tests/bundles/focal-yoga.yaml
@@ -157,8 +157,7 @@ applications:
     channel: yoga/edge
 
   prometheus2:
-# Pin prometheus2 charm version Bug #1891942
-    charm: cs:prometheus2-18
+    charm: ch:prometheus2
     num_units: 1
     to:
       - '16'
diff --git a/tests/bundles/jammy-yoga.yaml b/tests/bundles/jammy-yoga.yaml
index 969abd16..a359c3b5 100644
--- a/tests/bundles/jammy-yoga.yaml
+++ b/tests/bundles/jammy-yoga.yaml
@@ -158,8 +158,7 @@ applications:
     channel: yoga/edge
 
   prometheus2:
-# Pin prometheus2 charm version Bug #1891942
-    charm: cs:prometheus2-18
+    charm: ch:prometheus2
     num_units: 1
     series: focal
     to: