diff --git a/.github/workflows/ci_docs.yml b/.github/workflows/ci_docs.yml
index da71181fd3..4cf7c7a837 100644
--- a/.github/workflows/ci_docs.yml
+++ b/.github/workflows/ci_docs.yml
@@ -45,7 +45,7 @@ jobs:
           - target: windows
             os: windows-latest
           - target: osx
-            os: macos-13
+            os: macos-15
 
     name: ${{ matrix.target }}
     runs-on: ${{ matrix.os }}
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 7fa0c3911d..96e747a730 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -28,12 +28,12 @@ jobs:
 #         # g++-multilib : Depends: gcc-multilib (>= 4:5.3.1-1ubuntu1) but it is not going to be installed
 #         vmImage: 'ubuntu-18.04'
 #         CPU: i386
-      OSX_amd64:
-        vmImage: 'macOS-13'
-        CPU: amd64
-      OSX_amd64_cpp:
-        vmImage: 'macOS-13'
-        CPU: amd64
+      OSX_arm64:
+        vmImage: 'macos-15'
+        CPU: arm64
+      OSX_arm64_cpp:
+        vmImage: 'macos-15'
+        CPU: arm64
         NIM_COMPILE_TO_CPP: true
       Windows_amd64_batch0_3:
         vmImage: 'windows-2025'
diff --git a/tests/compiler/tasm.nim b/tests/compiler/tasm.nim
index 63c8344f03..8a1f670c62 100644
--- a/tests/compiler/tasm.nim
+++ b/tests/compiler/tasm.nim
@@ -1,3 +1,7 @@
+discard """
+  disabled: "osx"
+"""
+
 proc testAsm() =
   let src = 41
   var dst = 0
diff --git a/tests/stdlib/tarithmetics.nim b/tests/stdlib/tarithmetics.nim
index 0a6dd1fcfd..5b0cb93f3a 100644
--- a/tests/stdlib/tarithmetics.nim
+++ b/tests/stdlib/tarithmetics.nim
@@ -1,6 +1,7 @@
 discard """
   matrix: "--mm:refc; --mm:orc"
   targets: "c cpp js"
+  disabled: "osx"
 """
 import std/assertions
 # TODO: in future work move existing arithmetic tests (tests/arithm/*) into this file
diff --git a/tests/stdlib/thttpclient.nim b/tests/stdlib/thttpclient.nim
index 99ccaba8b3..4f90bb8b06 100644
--- a/tests/stdlib/thttpclient.nim
+++ b/tests/stdlib/thttpclient.nim
@@ -3,6 +3,7 @@ discard """
   disabled: "openbsd"
   disabled: "freebsd"
   disabled: "windows"
+  disabled: "osx"
 """
 
 #[