diff --git a/config/gem_tlc.yaml b/config/gem_tlc.yaml
index 8665bf8e..d917ac6f 100644
--- a/config/gem_tlc.yaml
+++ b/config/gem_tlc.yaml
@@ -48,3 +48,4 @@ alarms:
     component: DL1
 restrict_testing:
   sxl_version: 1.2
+  core_version: 3.1.3
diff --git a/spec/site/tlc/io_spec.rb b/spec/site/tlc/io_spec.rb
index abe08749..14826eb7 100644
--- a/spec/site/tlc/io_spec.rb
+++ b/spec/site/tlc/io_spec.rb
@@ -11,7 +11,7 @@
       # 1. Given the site is connected
       # 2. When we read input with S0029
       # 3. Then we should receive a valid response
-      specify 'is read with S0003' do |example|
+      specify 'is read with S0003', sxl: '<1.2' do |example|
         Validator::Site.connected do |task,supervisor,site|
          request_status_and_confirm site, "input status",
             { S0003: [:inputstatus] }
@@ -99,7 +99,7 @@
       # 2. When we subscribe to S0004
       # 3. We should receive a status updated
       # 4. And the outputstatus attribute should be a digit string
-      specify 'is read with S0004', sxl: '>=1.0.7' do |example|
+      specify 'is read with S0004', sxl: ['>=1.0.7','<1.2'] do |example|
         Validator::Site.connected do |task,supervisor,site|
           prepare task, site
           request_status_and_confirm site, "output status",