diff --git a/package-lock.json b/package-lock.json
index 86c9778..708c1c4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,7 +11,7 @@
       "dependencies": {
         "wasmbuilder": "0.0.16",
         "wasmcurves": "0.2.2",
-        "web-worker": "^1.2.0"
+        "web-worker": "1.2.0"
       },
       "devDependencies": {
         "@rollup/plugin-commonjs": "^25.0.4",
diff --git a/package.json b/package.json
index 8fdd4a7..14c1f5d 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
   "dependencies": {
     "wasmbuilder": "0.0.16",
     "wasmcurves": "0.2.2",
-    "web-worker": "^1.2.0"
+    "web-worker": "1.2.0"
   },
   "devDependencies": {
     "@rollup/plugin-commonjs": "^25.0.4",