diff --git a/core/package.json b/core/package.json
index 9439da160..fd6dab2ca 100644
--- a/core/package.json
+++ b/core/package.json
@@ -49,7 +49,7 @@
 	},
 	"dependencies": {
 		"@guardian/ab-core": "9.0.0",
-		"@guardian/libs": "27.0.0"
+		"@guardian/libs": "27.1.0"
 	},
 	"devDependencies": {
 		"@guardian/ophan-tracker-js": "2.8.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 57eb9fdfa..d75e9ede0 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -217,8 +217,8 @@ importers:
         specifier: 9.0.0
         version: 9.0.0(tslib@2.8.1)(typescript@5.9.3)
       '@guardian/libs':
-        specifier: 27.0.0
-        version: 27.0.0(@guardian/ophan-tracker-js@2.8.0)(tslib@2.8.1)(typescript@5.9.3)
+        specifier: 27.1.0
+        version: 27.1.0(@guardian/ophan-tracker-js@2.8.0)(tslib@2.8.1)(typescript@5.9.3)
     devDependencies:
       '@guardian/ophan-tracker-js':
         specifier: 2.8.0
@@ -1306,16 +1306,6 @@ packages:
       typescript:
         optional: true
 
-  '@guardian/libs@27.0.0':
-    resolution: {integrity: sha512-H5HV7pfAk9efC+/sIoTyqx9iYte1VwF8i90g+5o7OuE1iLr8dZhX8e1chQaXxEAj7vEFz/gYCs5/noARxoqsmA==}
-    peerDependencies:
-      '@guardian/ophan-tracker-js': ^2.2.10
-      tslib: ^2.8.1
-      typescript: ~5.9.3
-    peerDependenciesMeta:
-      typescript:
-        optional: true
-
   '@guardian/libs@27.1.0':
     resolution: {integrity: sha512-L2cTK/H/6WRTU6GP+XZOjbJhpuWh48LCpL5zVPkad3f4GMZgp+Me/xJfDMMh31bw9lO8VBzTVr+uSTJyGrJu5Q==}
     peerDependencies:
@@ -7419,13 +7409,6 @@ snapshots:
     optionalDependencies:
       typescript: 5.9.3
 
-  '@guardian/libs@27.0.0(@guardian/ophan-tracker-js@2.8.0)(tslib@2.8.1)(typescript@5.9.3)':
-    dependencies:
-      '@guardian/ophan-tracker-js': 2.8.0
-      tslib: 2.8.1
-    optionalDependencies:
-      typescript: 5.9.3
-
   '@guardian/libs@27.1.0(@guardian/ophan-tracker-js@2.8.0)(tslib@2.8.1)(typescript@5.9.3)':
     dependencies:
       '@guardian/ophan-tracker-js': 2.8.0