diff --git a/scripts/mk_nuget_task.py b/scripts/mk_nuget_task.py
index 152b4bf84..39d5f0f26 100644
--- a/scripts/mk_nuget_task.py
+++ b/scripts/mk_nuget_task.py
@@ -86,10 +86,11 @@ def mk_icon(source_root):
 
     
 def create_nuget_spec(version, repo, branch, commit, symbols, arch):
+    arch = f"{arch}." if arch == "x86" else ""
     contents = """<?xml version="1.0" encoding="utf-8"?>
 <package xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd">
     <metadata>
-        <id>Microsoft.Z3</id>
+        <id>Microsoft.Z3{4}</id>
         <version>{0}</version>
         <authors>Microsoft</authors>
         <description>
@@ -110,10 +111,9 @@ Linux Dependencies:
             <group targetFramework=".netstandard2.0" />
         </dependencies>
     </metadata>
-</package>""".format(version, repo, branch, commit)
+</package>""".format(version, repo, branch, commit, arch)
     print(contents)
     sym = "sym." if symbols else ""
-    arch = f"{arch}." if arch == "x86" else ""
     file = f"out/Microsoft.Z3.{arch}{sym}nuspec"
     print(file)
     with open(file, 'w') as f:
diff --git a/scripts/nightly.yaml b/scripts/nightly.yaml
index a3c5af2fd..08b3501a0 100644
--- a/scripts/nightly.yaml
+++ b/scripts/nightly.yaml
@@ -1,5 +1,5 @@
 variables:
-  ReleaseVersion: '4.8.14'
+  ReleaseVersion: '4.8.15'
 
 stages:
 - stage: Build
@@ -285,7 +285,7 @@ stages:
       inputs:
         ConnectedServiceName: 'z3-esrp-signing-2'
         FolderPath: $(Build.ArtifactStagingDirectory)
-        Pattern: Microsoft.Z3.$(ReleaseVersion).nupkg
+        Pattern: Microsoft.Z3.x86.$(ReleaseVersion).nupkg
         signConfigType: 'inlineSignParams'
         inlineOperation: |
           [