diff --git a/package-lock.json b/package-lock.json
index e0ff8bf6..d65af21c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13,7 +13,7 @@
         "./packages/*"
       ],
       "devDependencies": {
-        "@accordproject/concerto-core": "^3.19.8",
+        "@accordproject/concerto-core": "3.19.8",
         "dayjs": "1.11.13",
         "glob": "^7.1.7",
         "handlebars": "^4.7.8",
diff --git a/package.json b/package.json
index 96968732..1bcc5026 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "devDependencies": {
-    "@accordproject/concerto-core": "^3.19.8",
+    "@accordproject/concerto-core": "3.19.8",
     "dayjs": "1.11.13",
     "glob": "^7.1.7",
     "handlebars": "^4.7.8",