diff --git a/.smalltalkci/.loading.dependent-sunit-extensions.ston b/.smalltalkci/.loading.dependent-sunit-extensions.ston
index aa0c153..e411af3 100644
--- a/.smalltalkci/.loading.dependent-sunit-extensions.ston
+++ b/.smalltalkci/.loading.dependent-sunit-extensions.ston
@@ -4,7 +4,8 @@ SmalltalkCISpec {
       #baseline : 'Buoy',
       #directory : '../source',
       #load : [ 'Dependent-SUnit-Extensions' ],
-      #platforms : [  #pharo ]
+      #platforms : [  #pharo ],
+      #failOn : [ #Warning ]
     }
   ],
   #testing : {
diff --git a/.smalltalkci/.loading.deployment.ston b/.smalltalkci/.loading.deployment.ston
index 2e8727c..7676fa4 100644
--- a/.smalltalkci/.loading.deployment.ston
+++ b/.smalltalkci/.loading.deployment.ston
@@ -4,7 +4,8 @@ SmalltalkCISpec {
       #baseline : 'Buoy',
       #directory : '../source',
       #load : [ 'Deployment' ],
-      #platforms : [  #pharo ]
+      #platforms : [  #pharo ],
+      #failOn : [ #Warning ]
     }
   ],
   #testing : {
diff --git a/.smalltalkci/.loading.development.ston b/.smalltalkci/.loading.development.ston
index aa0a0e0..a2ffa05 100644
--- a/.smalltalkci/.loading.development.ston
+++ b/.smalltalkci/.loading.development.ston
@@ -4,7 +4,8 @@ SmalltalkCISpec {
       #baseline : 'Buoy',
       #directory : '../source',
       #load : [ 'Development' ],
-      #platforms : [  #pharo ]
+      #platforms : [  #pharo ],
+      #failOn : [ #Warning ]
     }
   ],
   #testing : {
diff --git a/.smalltalkci/.loading.tests.ston b/.smalltalkci/.loading.tests.ston
index b2382cd..df95180 100644
--- a/.smalltalkci/.loading.tests.ston
+++ b/.smalltalkci/.loading.tests.ston
@@ -4,7 +4,8 @@ SmalltalkCISpec {
       #baseline : 'Buoy',
       #directory : '../source',
       #load : [ 'Tests' ],
-      #platforms : [  #pharo ]
+      #platforms : [  #pharo ],
+      #failOn : [ #Warning ]
     }
   ],
   #testing : {
diff --git a/.smalltalkci/.loading.tools.ston b/.smalltalkci/.loading.tools.ston
index 47b6fca..8437338 100644
--- a/.smalltalkci/.loading.tools.ston
+++ b/.smalltalkci/.loading.tools.ston
@@ -4,7 +4,8 @@ SmalltalkCISpec {
       #baseline : 'Buoy',
       #directory : '../source',
       #load : [ 'Tools' ],
-      #platforms : [  #pharo ]
+      #platforms : [  #pharo ],
+      #failOn : [ #Warning ]
     }
   ],
   #testing : {
diff --git a/source/BaselineOfBuoy/BaselineOfBuoy.class.st b/source/BaselineOfBuoy/BaselineOfBuoy.class.st
index f5ab283..9799fc5 100644
--- a/source/BaselineOfBuoy/BaselineOfBuoy.class.st
+++ b/source/BaselineOfBuoy/BaselineOfBuoy.class.st
@@ -30,7 +30,14 @@ BaselineOfBuoy >> baseline: spec [
 				group: 'CI' with: 'Tests';
 				group: 'Development' with: #('Tools' 'Tests');
 				group: 'default' with: 'Development'
-			]
+			].
+	spec for: #'pharo12.x' do: [
+		spec
+			package: 'Buoy-Development-Tools-Pharo-12'
+				with: [ spec requires: 'Buoy-Development-Tools' ];
+			group: 'Tools' with: 'Buoy-Development-Tools-Pharo-12'
+	]
+			
 ]
 
 { #category : #baselines }
diff --git a/source/Buoy-Development-Tools/TonelWriterV3.extension.st b/source/Buoy-Development-Tools-Pharo-12/TonelWriterV3.extension.st
similarity index 96%
rename from source/Buoy-Development-Tools/TonelWriterV3.extension.st
rename to source/Buoy-Development-Tools-Pharo-12/TonelWriterV3.extension.st
index 7ffdee7..777ada5 100644
--- a/source/Buoy-Development-Tools/TonelWriterV3.extension.st
+++ b/source/Buoy-Development-Tools-Pharo-12/TonelWriterV3.extension.st
@@ -1,6 +1,6 @@
 Extension { #name : 'TonelWriterV3' }
 
-{ #category : '*Buoy-Development-Tools' }
+{ #category : '*Buoy-Development-Tools-Pharo-12' }
 TonelWriterV3 >> typeClassDefinitionOf: aClassDefinition [
 
 	| definition |
diff --git a/source/Buoy-Development-Tools-Pharo-12/package.st b/source/Buoy-Development-Tools-Pharo-12/package.st
new file mode 100644
index 0000000..6dae745
--- /dev/null
+++ b/source/Buoy-Development-Tools-Pharo-12/package.st
@@ -0,0 +1 @@
+Package { #name : 'Buoy-Development-Tools-Pharo-12' }