diff --git a/installers/charm/juju-simplestreams-operator/charmcraft.yaml b/installers/charm/juju-simplestreams-operator/charmcraft.yaml
index 05960ce..f8944c5 100644
--- a/installers/charm/juju-simplestreams-operator/charmcraft.yaml
+++ b/installers/charm/juju-simplestreams-operator/charmcraft.yaml
@@ -23,10 +23,10 @@
 bases:
   - build-on:
       - name: "ubuntu"
-        channel: "22.04"
+        channel: "20.04"
     run-on:
       - name: "ubuntu"
-        channel: "22.04"
+        channel: "20.04"
 
 parts:
   charm:
diff --git a/installers/charm/osm-lcm/charmcraft.yaml b/installers/charm/osm-lcm/charmcraft.yaml
index f5e3ff3..2f54294 100644
--- a/installers/charm/osm-lcm/charmcraft.yaml
+++ b/installers/charm/osm-lcm/charmcraft.yaml
@@ -23,10 +23,10 @@
 bases:
   - build-on:
       - name: "ubuntu"
-        channel: "22.04"
+        channel: "20.04"
     run-on:
       - name: "ubuntu"
-        channel: "22.04"
+        channel: "20.04"
 
 parts:
   charm:
diff --git a/installers/charm/osm-mon/charmcraft.yaml b/installers/charm/osm-mon/charmcraft.yaml
index f5e3ff3..2f54294 100644
--- a/installers/charm/osm-mon/charmcraft.yaml
+++ b/installers/charm/osm-mon/charmcraft.yaml
@@ -23,10 +23,10 @@
 bases:
   - build-on:
       - name: "ubuntu"
-        channel: "22.04"
+        channel: "20.04"
     run-on:
       - name: "ubuntu"
-        channel: "22.04"
+        channel: "20.04"
 
 parts:
   charm:
diff --git a/installers/charm/osm-nbi/charmcraft.yaml b/installers/charm/osm-nbi/charmcraft.yaml
index 42fb3ec..8395be9 100644
--- a/installers/charm/osm-nbi/charmcraft.yaml
+++ b/installers/charm/osm-nbi/charmcraft.yaml
@@ -23,10 +23,10 @@
 bases:
   - build-on:
       - name: "ubuntu"
-        channel: "22.04"
+        channel: "20.04"
     run-on:
       - name: "ubuntu"
-        channel: "22.04"
+        channel: "20.04"
 
 parts:
   charm:
diff --git a/installers/charm/osm-ng-ui/charmcraft.yaml b/installers/charm/osm-ng-ui/charmcraft.yaml
index 072529c..25ff590 100644
--- a/installers/charm/osm-ng-ui/charmcraft.yaml
+++ b/installers/charm/osm-ng-ui/charmcraft.yaml
@@ -23,10 +23,10 @@
 bases:
   - build-on:
       - name: "ubuntu"
-        channel: "22.04"
+        channel: "20.04"
     run-on:
       - name: "ubuntu"
-        channel: "22.04"
+        channel: "20.04"
 
 parts:
   charm:
diff --git a/installers/charm/osm-pol/charmcraft.yaml b/installers/charm/osm-pol/charmcraft.yaml
index f5e3ff3..2f54294 100644
--- a/installers/charm/osm-pol/charmcraft.yaml
+++ b/installers/charm/osm-pol/charmcraft.yaml
@@ -23,10 +23,10 @@
 bases:
   - build-on:
       - name: "ubuntu"
-        channel: "22.04"
+        channel: "20.04"
     run-on:
       - name: "ubuntu"
-        channel: "22.04"
+        channel: "20.04"
 
 parts:
   charm:
diff --git a/installers/charm/osm-ro/charmcraft.yaml b/installers/charm/osm-ro/charmcraft.yaml
index f5e3ff3..2f54294 100644
--- a/installers/charm/osm-ro/charmcraft.yaml
+++ b/installers/charm/osm-ro/charmcraft.yaml
@@ -23,10 +23,10 @@
 bases:
   - build-on:
       - name: "ubuntu"
-        channel: "22.04"
+        channel: "20.04"
     run-on:
       - name: "ubuntu"
-        channel: "22.04"
+        channel: "20.04"
 
 parts:
   charm:
diff --git a/installers/charm/vca-integrator-operator/charmcraft.yaml b/installers/charm/vca-integrator-operator/charmcraft.yaml
index 98ffe03..0d7d5eb 100644
--- a/installers/charm/vca-integrator-operator/charmcraft.yaml
+++ b/installers/charm/vca-integrator-operator/charmcraft.yaml
@@ -19,10 +19,10 @@
 bases:
   - build-on:
       - name: "ubuntu"
-        channel: "22.04"
+        channel: "20.04"
     run-on:
       - name: "ubuntu"
-        channel: "22.04"
+        channel: "20.04"
 parts:
   charm:
     build-environment: