diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fdce598..4ab1bd0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        nim: [1.6.20, stable]
+        nim: [2.0.16, 2.2.4]
     steps:
       - name: Checkout
         uses: actions/checkout@v4
diff --git a/.gitignore b/.gitignore
index 2681317..60b68bf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,4 +5,5 @@ nimble.develop
 nimble.paths
 .idea
 vendor/
-.vscode/
\ No newline at end of file
+.vscode/
+nimbledeps
diff --git a/config.nims b/config.nims
index e01d099..5047545 100644
--- a/config.nims
+++ b/config.nims
@@ -1,7 +1,8 @@
 --styleCheck:usages
 --styleCheck:error
 
-# begin Nimble config (version 1)
-when fileExists("nimble.paths"):
+# begin Nimble config (version 2)
+--noNimblePath
+when withDir(thisDir(), system.fileExists("nimble.paths")):
   include "nimble.paths"
 # end Nimble config
diff --git a/nimble.lock b/nimble.lock
new file mode 100644
index 0000000..0794840
--- /dev/null
+++ b/nimble.lock
@@ -0,0 +1,130 @@
+{
+  "version": 2,
+  "packages": {
+    "results": {
+      "version": "0.5.1",
+      "vcsRevision": "df8113dda4c2d74d460a8fa98252b0b771bf1f27",
+      "url": "https://github.com/arnetheduck/nim-results",
+      "downloadMethod": "git",
+      "dependencies": [],
+      "checksums": {
+        "sha1": "a9c011f74bc9ed5c91103917b9f382b12e82a9e7"
+      }
+    },
+    "unittest2": {
+      "version": "0.2.4",
+      "vcsRevision": "8b51e99b4a57fcfb31689230e75595f024543024",
+      "url": "https://github.com/status-im/nim-unittest2",
+      "downloadMethod": "git",
+      "dependencies": [],
+      "checksums": {
+        "sha1": "746106a4dfefffce497f1693733f1c1513b5c62c"
+      }
+    },
+    "stew": {
+      "version": "0.4.1",
+      "vcsRevision": "e5740014961438610d336cd81706582dbf2c96f0",
+      "url": "https://github.com/status-im/nim-stew",
+      "downloadMethod": "git",
+      "dependencies": [
+        "results",
+        "unittest2"
+      ],
+      "checksums": {
+        "sha1": "996d9c058ee078d0209a5f539424a0235683918c"
+      }
+    },
+    "faststreams": {
+      "version": "0.4.1",
+      "vcsRevision": "c3ac3f639ed1d62f59d3077d376a29c63ac9750c",
+      "url": "https://github.com/status-im/nim-faststreams",
+      "downloadMethod": "git",
+      "dependencies": [
+        "stew",
+        "unittest2"
+      ],
+      "checksums": {
+        "sha1": "e2d03280cf0675314136e6e63d9d928d9dfc9705"
+      }
+    },
+    "serialization": {
+      "version": "0.4.9",
+      "vcsRevision": "b5193007a49639b21b2b80cd8ef8cbe0df6b0e48",
+      "url": "https://github.com/status-im/nim-serialization",
+      "downloadMethod": "git",
+      "dependencies": [
+        "faststreams",
+        "unittest2",
+        "stew"
+      ],
+      "checksums": {
+        "sha1": "ab0812a7e16ae39ee68f4a6b1938a1b83dee34be"
+      }
+    },
+    "json_serialization": {
+      "version": "0.4.2",
+      "vcsRevision": "e076cb9a2dff30e13aad0bb4a13049da86d07967",
+      "url": "https://github.com/status-im/nim-json-serialization",
+      "downloadMethod": "git",
+      "dependencies": [
+        "serialization",
+        "stew",
+        "results"
+      ],
+      "checksums": {
+        "sha1": "2b26a9e0fc79638dbb9272fb4ab5a1d79264f938"
+      }
+    },
+    "testutils": {
+      "version": "0.8.0",
+      "vcsRevision": "e4d37dc1652d5c63afb89907efb5a5e812261797",
+      "url": "https://github.com/status-im/nim-testutils",
+      "downloadMethod": "git",
+      "dependencies": [
+        "unittest2"
+      ],
+      "checksums": {
+        "sha1": "d1678f50aa47d113b4e77d41eec2190830b523fa"
+      }
+    },
+    "chronicles": {
+      "version": "0.12.2",
+      "vcsRevision": "27ec507429a4eb81edc20f28292ee8ec420be05b",
+      "url": "https://github.com/status-im/nim-chronicles",
+      "downloadMethod": "git",
+      "dependencies": [
+        "faststreams",
+        "serialization",
+        "json_serialization",
+        "testutils"
+      ],
+      "checksums": {
+        "sha1": "02febb20d088120b2836d3306cfa21f434f88f65"
+      }
+    },
+    "questionable": {
+      "version": "0.10.15",
+      "vcsRevision": "82d90b67bcfb7f2e918b61dace2ff1a4ced60935",
+      "url": "https://github.com/codex-storage/questionable",
+      "downloadMethod": "git",
+      "dependencies": [],
+      "checksums": {
+        "sha1": "3238ff637c7b44d2fa8fcb839a8ded968e389de3"
+      }
+    },
+    "stint": {
+      "version": "0.8.2",
+      "vcsRevision": "470b7892561b5179ab20bd389a69217d6213fe58",
+      "url": "https://github.com/status-im/nim-stint",
+      "downloadMethod": "git",
+      "dependencies": [
+        "stew",
+        "unittest2"
+      ],
+      "checksums": {
+        "sha1": "d8f871fd617e7857192d4609fe003b48942a8ae5"
+      }
+    }
+  },
+  "tasks": {}
+}
diff --git a/serde.nimble b/serde.nimble
index 187b395..c7e7912 100644
--- a/serde.nimble
+++ b/serde.nimble
@@ -7,13 +7,8 @@ license = "MIT"
 skipDirs = @["tests"]
 
 # Dependencies
-requires "nim >= 1.6.14"
-requires "chronicles >= 0.10.3 & < 0.11.0"
+requires "chronicles >= 0.10.3"
 requires "questionable >= 0.10.13 & < 0.11.0"
 requires "stint"
 requires "stew"
-
-task test, "Run the test suite":
-  exec "nimble install -d -y"
-  withDir "tests":
-    exec "nimble test"
+requires "asynctest >= 0.5.1 & < 0.6.0"
diff --git a/serde/json/deserializer.nim b/serde/json/deserializer.nim
index 41c4106..c8da8b3 100644
--- a/serde/json/deserializer.nim
+++ b/serde/json/deserializer.nim
@@ -322,7 +322,7 @@ proc fromJson*(T: typedesc[StUint or StInt], json: string): ?!T =
   T.fromJson(newJString(json))
 
 proc fromJson*[T: ref object or object](_: type ?T, json: string): ?!Option[T] =
-  when T is (StUInt or StInt):
+  when T is (StUint or StInt):
     let jsn = newJString(json)
   else:
     let jsn = ?JsonNode.parse(json) # full qualification required in-module only
diff --git a/tests/test.nimble b/tests/test.nimble
deleted file mode 100644
index fc7114f..0000000
--- a/tests/test.nimble
+++ /dev/null
@@ -1,11 +0,0 @@
-version = "0.1.0"
-author = "nim serde authors"
-description = "tests for nim serde library"
-license = "MIT"
-
-requires "asynctest >= 0.5.1 & < 0.6.0"
-requires "questionable >= 0.10.13 & < 0.11.0"
-
-task test, "Run the test suite":
-  exec "nimble install -d -y"
-  exec "nim c -r test"