diff --git a/loterre-resolvers/v1/9SD/expand.ini b/loterre-resolvers/v1/9SD/expand.ini
index bf1bc01..8e4cc68 100644
--- a/loterre-resolvers/v1/9SD/expand.ini
+++ b/loterre-resolvers/v1/9SD/expand.ini
@@ -18,6 +18,9 @@
 path = primer
 value = https://inist-wsdata.dboard.inist.fr/loterre-resolvers-pays.xml
 
+path = weekNumber
+value = thru(() => new Date()).thru(currentDate => Math.floor((currentDate - (new Date(currentDate.getFullYear(), 0, 1)))/(24 * 60 * 60 * 1000))).thru(days => Math.ceil(days / 7))
+
 # Necessary plugins
 [use]
 plugin = basics
@@ -32,7 +35,7 @@
 [expand]
 path = value
 size = 1
-cacheName = env('primer').append('expand')
+cacheName = env('weekNumber').prepend('post-v1-9SD-expand-week')
 
 [expand/assign]
 path = value
@@ -42,7 +45,7 @@
 path = value
 primer = env('primer')
 file = ./v1/combine.ini
-cacheName = post-v1-9SD-expand
+cacheName = env('weekNumber').prepend('post-v1-9SD-combine-week')
 
 [dump]
 indent = env('indent', false)
diff --git a/loterre-resolvers/v1/9SD/identify.ini b/loterre-resolvers/v1/9SD/identify.ini
index 1fb231e..16c97d5 100644
--- a/loterre-resolvers/v1/9SD/identify.ini
+++ b/loterre-resolvers/v1/9SD/identify.ini
@@ -30,6 +30,9 @@
 path = primer
 value = https://inist-wsdata.dboard.inist.fr/loterre-resolvers-pays.xml
 
+path = weekNumber
+value = thru(() => new Date()).thru(currentDate => Math.floor((currentDate - (new Date(currentDate.getFullYear(), 0, 1)))/(24 * 60 * 60 * 1000))).thru(days => Math.ceil(days / 7))
+
 # Necessary plugins
 [use]
 plugin = basics
@@ -43,7 +46,7 @@
 [expand]
 path = value
 size = 1
-cacheName = env('primer').append('identify')
+cacheName = env('weekNumber').prepend('post-v1-9SD-identify-week')
 
 [expand/assign]
 path = value
@@ -53,7 +56,7 @@
 path = value
 primer = env('primer')
 file = ./v1/combine.ini
-cacheName = post-v1-9SD-identify
+cacheName = env('weekNumber').prepend('post-v1-9SD-combine-week')
 
 [expand/remove]
 test = get('value.value').isString()
diff --git a/loterre-resolvers/v1/D63/expand.ini b/loterre-resolvers/v1/D63/expand.ini
index e3dfd93..0a81c2f 100644
--- a/loterre-resolvers/v1/D63/expand.ini
+++ b/loterre-resolvers/v1/D63/expand.ini
@@ -18,6 +18,9 @@
 path = primer
 value = https://inist-wsdata.dboard.inist.fr/loterre-resolvers-communes.xml
 
+path = weekNumber
+value = thru(() => new Date()).thru(currentDate => Math.floor((currentDate - (new Date(currentDate.getFullYear(), 0, 1)))/(24 * 60 * 60 * 1000))).thru(days => Math.ceil(days / 7))
+
 # Necessary plugins
 [use]
 plugin = basics
@@ -32,7 +35,10 @@
 [expand]
 path = value
 size = 1
-cacheName = env('primer').append('expand')
+cacheName = env('weekNumber').prepend('post-v1-D63-expand-week')
+
+path = weekNumber
+value = thru(() => new Date()).thru(currentDate => Math.floor((currentDate - (new Date(currentDate.getFullYear(), 0, 1)))/(24 * 60 * 60 * 1000))).thru(days => Math.ceil(days / 7))
 
 [expand/assign]
 path = value
@@ -42,7 +48,7 @@
 path = value
 primer = env('primer')
 file = ./v1/combine.ini
-cacheName = post-v1-D63-expand
+cacheName = env('weekNumber').prepend('post-v1-D63-combine-week')
 
 [dump]
 indent = env('indent', false)
diff --git a/loterre-resolvers/v1/D63/identify.ini b/loterre-resolvers/v1/D63/identify.ini
index 5cf5dd1..101a609 100644
--- a/loterre-resolvers/v1/D63/identify.ini
+++ b/loterre-resolvers/v1/D63/identify.ini
@@ -30,6 +30,9 @@
 path = primer
 value = https://inist-wsdata.dboard.inist.fr/loterre-resolvers-communes.xml
 
+path = weekNumber
+value = thru(() => new Date()).thru(currentDate => Math.floor((currentDate - (new Date(currentDate.getFullYear(), 0, 1)))/(24 * 60 * 60 * 1000))).thru(days => Math.ceil(days / 7))
+
 # Necessary plugins
 [use]
 plugin = basics
@@ -43,7 +46,7 @@
 [expand]
 path = value
 size = 1
-cacheName = env('primer').append('identify')
+cacheName = env('weekNumber').prepend('post-v1-D63-identify-week')
 
 [expand/assign]
 path = value
@@ -53,7 +56,7 @@
 path = value
 primer = env('primer')
 file = ./v1/combine.ini
-cacheName = post-v1-D63-identify
+cacheName = env('weekNumber').prepend('post-v1-D63-combine-week')
 
 [expand/remove]
 test = get('value.value').isString()
diff --git a/loterre-resolvers/v1/P66/expand.ini b/loterre-resolvers/v1/P66/expand.ini
index 4c6f328..820c5df 100644
--- a/loterre-resolvers/v1/P66/expand.ini
+++ b/loterre-resolvers/v1/P66/expand.ini
@@ -176,6 +176,9 @@
 path = primer
 value = https://inist-wsdata.dboard.inist.fr/loterre-resolvers-memoire.xml
 
+path = weekNumber
+value = thru(() => new Date()).thru(currentDate => Math.floor((currentDate - (new Date(currentDate.getFullYear(), 0, 1)))/(24 * 60 * 60 * 1000))).thru(days => Math.ceil(days / 7))
+
 # Necessary plugins
 [use]
 plugin = basics
@@ -190,7 +193,7 @@
 [expand]
 path = value
 size = 1
-cacheName = env('primer').append('expand')
+cacheName = env('weekNumber').prepend('post-v1-P66-expand-week')
 
 [expand/assign]
 path = value
@@ -200,7 +203,7 @@
 path = value
 primer = env('primer')
 file = ./v1/combine.ini
-cacheName = post-v1-P66-expand
+cacheName = env('weekNumber').prepend('post-v1-P66-combine-week')
 
 [dump]
 indent = env('indent', false)
diff --git a/loterre-resolvers/v1/P66/identify.ini b/loterre-resolvers/v1/P66/identify.ini
index e60751b..4f7900b 100644
--- a/loterre-resolvers/v1/P66/identify.ini
+++ b/loterre-resolvers/v1/P66/identify.ini
@@ -37,6 +37,9 @@
 path = primer
 value = https://inist-wsdata.dboard.inist.fr/loterre-resolvers-memoire.xml
 
+path = weekNumber
+value = thru(() => new Date()).thru(currentDate => Math.floor((currentDate - (new Date(currentDate.getFullYear(), 0, 1)))/(24 * 60 * 60 * 1000))).thru(days => Math.ceil(days / 7))
+
 # Necessary plugins
 [use]
 plugin = basics
@@ -50,7 +53,7 @@
 [expand]
 path = value
 size = 1
-cacheName = env('primer').append('identify')
+cacheName = env('weekNumber').prepend('post-v1-P66-identify-week')
 
 [expand/assign]
 path = value
@@ -60,7 +63,7 @@
 path = value
 primer = env('primer')
 file = ./v1/combine.ini
-cacheName = post-v1-P66-identify
+cacheName = env('weekNumber').prepend('post-v1-P66-combine-week')
 
 [expand/remove]
 test = get('value.value').isString()