diff --git a/atlas.nimble b/atlas.nimble
index 2b89968e..d9de29ad 100644
--- a/atlas.nimble
+++ b/atlas.nimble
@@ -1,5 +1,5 @@
 # Package
-version = "0.9.1"
+version = "0.9.2"
 author = "Araq"
 description = "Atlas is a simple package cloner tool. It manages an isolated project."
 license = "MIT"
diff --git a/src/basic/versions.nim b/src/basic/versions.nim
index f1b6bcb0..683de261 100644
--- a/src/basic/versions.nim
+++ b/src/basic/versions.nim
@@ -265,7 +265,10 @@ proc parseSuffix(s: string; start: int; result: var VersionInterval; err: var bo
 
 proc parseVersionInterval*(s: string; start: int; err: var bool): VersionInterval =
   var i = start
+  # Skip whitespace and an optional '@' marker before the version spec
   while i < s.len and s[i] in Whitespace: inc i
+  if "@" in s:
+    raise newException(ValueError, "@ is not allowed in version intervals, got: " & s)
   result = VersionInterval(a: VersionReq(r: verAny, v: Version""))
   if i < s.len:
     case s[i]
@@ -351,6 +354,8 @@ proc matches*(pattern: VersionInterval; v: Version): bool =
     result = matches(pattern.a, v)
 
 proc extractRequirementName*(req: string): (string, seq[string], int) =
+  if "@" in req:
+    raise newException(ValueError, "@ is not allowed in version intervals, got: " & req)
   const verChars = {'#', '<', '=', '>', '['}
   var i = 0
   while i < req.len and req[i] notin verChars + Whitespace:
diff --git a/src/dependencies.nim b/src/dependencies.nim
index dce094c9..60fe4b8e 100644
--- a/src/dependencies.nim
+++ b/src/dependencies.nim
@@ -126,23 +126,27 @@ proc addRelease(
     nc: var NimbleContext;
     pkg: Package,
     vtag: VersionTag
-): PackageVersion =
+): bool =
   var pkgver = vtag.toPkgVer()
   trace pkg.url.projectName, "Adding Nimble version:", $vtag
-  let release = nc.processNimbleRelease(pkg, vtag)
-
-  if vtag.v.string == "":
-    pkgver.vtag.v = release.version
-    trace pkg.url.projectName, "updating release tag information:", $pkgver.vtag
-  elif release.version.string == "":
-    warn pkg.url.projectName, "nimble file missing version information:", $pkgver.vtag
-    release.version = vtag.version
-  elif vtag.v != release.version and not pkg.isRoot:
-    info pkg.url.projectName, "version mismatch between version tag:", $vtag.v, "and nimble version:", $release.version
-  
-  versions.add((pkgver, release))
-
-  result = pkgver
+  try:
+    let release = nc.processNimbleRelease(pkg, vtag)
+
+    if vtag.v.string == "":
+      pkgver.vtag.v = release.version
+      trace pkg.url.projectName, "updating release tag information:", $pkgver.vtag
+    elif release.version.string == "":
+      warn pkg.url.projectName, "nimble file missing version information:", $pkgver.vtag
+      release.version = vtag.version
+    elif vtag.v != release.version and not pkg.isRoot:
+      info pkg.url.projectName, "version mismatch between version tag:", $vtag.v, "and nimble version:", $release.version
+    
+    versions.add((pkgver, release))
+
+    result = true
+  except CatchableError as e:
+    error pkg.url.projectName, "addRelease error processing nimble release:", $vtag, "error:", $e.msg
+    return false
 
 proc traverseDependency*(
     nc: var NimbleContext;
@@ -238,8 +242,8 @@ proc traverseDependency*(
           if not uniqueCommits.containsOrIncl(tag.c):
             # trace pkg.url.projectName, "traverseDependency adding nimble commit:", $tag
             var vers: seq[(PackageVersion, NimbleRelease)]
-            let pver = vers.addRelease(nc, pkg, tag)
-            if not nimbleVersions.containsOrIncl(pver.vtag.v):
+            let added = vers.addRelease(nc, pkg, tag)
+            if added and not nimbleVersions.containsOrIncl(vers[0][0].vtag.v):
               versions.add(vers)
           else:
             error pkg.url.projectName, "traverseDependency skipping nimble commit:", $tag, "uniqueCommits:", $(tag.c in uniqueCommits), "nimbleVersions:", $(tag.v in nimbleVersions)
diff --git a/tests/trequires_at_marker.nim b/tests/trequires_at_marker.nim
new file mode 100644
index 00000000..e60f1acf
--- /dev/null
+++ b/tests/trequires_at_marker.nim
@@ -0,0 +1,34 @@
+import std/[unittest]
+import basic/versions
+
+suite "requires @ parsing":
+  test "name without @ for version constraint":
+    let req = "mcu_utils@ >= 0.1.0"
+    let (name, feats, idx) = extractRequirementName(req)
+    check name == "mcu_utils"
+    check feats.len == 0
+    var err = false
+    let iv = parseVersionInterval(req, idx, err)
+    check not err
+    check $iv == ">= 0.1.0"
+
+  test "name without @ for #head":
+    let req = "mcu_utils@#head"
+    let (name, feats, idx) = extractRequirementName(req)
+    check name == "mcu_utils"
+    check feats.len == 0
+    var err = false
+    let iv = parseVersionInterval(req, idx, err)
+    check not err
+    check $iv == "#head"
+
+  test "url without trailing @ in name":
+    let req = "https://github.com/EmbeddedNim/mcu_utils@ >= 0.2.0"
+    let (name, feats, idx) = extractRequirementName(req)
+    check name == "https://github.com/EmbeddedNim/mcu_utils"
+    check feats.len == 0
+    var err = false
+    let iv = parseVersionInterval(req, idx, err)
+    check not err
+    check $iv == ">= 0.2.0"
+