diff --git a/.yarnrc b/.yarnrc
deleted file mode 100644
index d9df855..0000000
--- a/.yarnrc
+++ /dev/null
@@ -1,5 +0,0 @@
-# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
-# yarn lockfile v1
-
-
-yarn-path ".yarn/releases/yarn-1.22.21.cjs"
diff --git a/package.json b/package.json
index 5432181..85826f6 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "@dusty-phillips/rescript-zora": "^4.0.0",
     "changie": "^1.18.0",
     "onchange": "^7.1.0",
-    "pta": "^1.2.0",
+    "pta": "1.2.0",
     "rescript": "^11.1.0",
     "zora": "^5.2.0"
   },
diff --git a/src/Os.res b/src/Os.res
index e3b3b11..acc346a 100644
--- a/src/Os.res
+++ b/src/Os.res
@@ -11,7 +11,7 @@ type cpu = private {
   times: cpuTimes,
 }
 @module("node:os") @val external eol: string = "EOL"
-@module("node:os") @val external arch: string = "arch"
+@module("node:os") @val external arch: unit => string = "arch"
 @module("node:os") @val external cpus: unit => array<cpu> = "cpus"
 @module("node:os") @val external endianness: unit => string = "endianness"
 @module("node:os") @val external freemem: unit => int = "freemem"
diff --git a/yarn.lock b/yarn.lock
index 3ef6a32..3626995 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -932,7 +932,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"pta@npm:^1.2.0":
+"pta@npm:1.2.0, pta@npm:^1.2.0":
   version: 1.2.0
   resolution: "pta@npm:1.2.0"
   dependencies:
@@ -970,7 +970,7 @@ __metadata:
     "@dusty-phillips/rescript-zora": "npm:^4.0.0"
     changie: "npm:^1.18.0"
     onchange: "npm:^7.1.0"
-    pta: "npm:^1.2.0"
+    pta: "npm:1.2.0"
     rescript: "npm:^11.1.0"
     zora: "npm:^5.2.0"
   languageName: unknown