diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 92d94c8..bc1e9ba 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -7,11 +7,27 @@ on:
       - master
 
 jobs:
-  default:
-    runs-on: ubuntu-latest
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        nim:
+          - '2.0.x'
+          - 'stable'
+          - devel
+        os:
+          - ubuntu-latest
+
+    name: '${{ matrix.nim }} (${{ matrix.os }})'
     steps:
       - uses: actions/checkout@v4
-      - uses: iffy/install-nim@v5
+      - name: Setup nim
+        uses: jiro4989/setup-nim-action@v2
+        with:
+          use-nightlies: true
+          nim-version: ${{ matrix.nim }}
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+
       - run: nimble install -y
       - run: nimble test
       - run: nimble test --gc:arc
diff --git a/zmq.nimble b/zmq.nimble
index 604263c..f14291a 100644
--- a/zmq.nimble
+++ b/zmq.nimble
@@ -1,6 +1,6 @@
 # Package
 
-version       = "1.5.2"
+version       = "1.5.3"
 author        = "Andreas Rumpf"
 description   = "ZeroMQ wrapper"
 license       = "MIT"
diff --git a/zmq/connections.nim b/zmq/connections.nim
index 79c9349..b4fa50e 100644
--- a/zmq/connections.nim
+++ b/zmq/connections.nim
@@ -91,6 +91,7 @@ proc terminate*(ctx: ZContext) =
   get/set socket options
   Declare socket options first because it's used in =destroy hooks
 ]#
+
 # Some option take cint, int64 or uint64
 proc setsockopt_impl[T: SomeOrdinal](s: ZSocket, option: ZSockOptions, optval: T) =
   var val: T = optval
@@ -106,17 +107,16 @@ proc setsockopt_impl(s: ZSocket, option: ZSockOptions, optval: string) =
 # some sockopt returns integer values
 proc getsockopt_impl[T: SomeOrdinal](s: ZSocket, option: ZSockOptions, optval: var T) =
   var optval_len: int = sizeof(optval)
-
   if bindings.getsockopt(s, option, addr(optval), addr(optval_len)) != 0:
     zmqError()
 
 # Some sockopt returns a string
 proc getsockopt_impl(s: ZSocket, option: ZSockOptions, optval: var string) =
   var optval_len: int = optval.len
-
   if bindings.getsockopt(s, option, cstring(optval), addr(optval_len)) != 0:
     zmqError()
 
+
 #[
   Public set/get sockopt function on ZSocket / ZConnection
 ]#
@@ -125,7 +125,7 @@ proc setsockopt*[T: SomeOrdinal|string](s: ZSocket, option: ZSockOptions, optval
   ##
   ## Careful, the ``sizeof`` of ``optval`` depends on the ``ZSockOptions`` passed.
   ## Check http://api.zeromq.org/4-2:zmq-setsockopt
-  setsockopt_impl[T](s, option, optval)
+  setsockopt_impl(s, option, optval)
 
 proc setsockopt[T: SomeOrdinal|string](c: ZConnectionImpl, option: ZSockOptions, optval: T) =
   ## Internal
@@ -323,7 +323,7 @@ proc close(c: var ZConnectionImpl, linger: int = 500) =
     c.context.terminate()
 
 proc close*(c: ZConnection, linger: int = 500) =
-  c[].close()
+  close(c[], linger)
 
 # Send / Receive
 # Send with ZSocket type