diff --git a/lua/mason-core/installer/managers/pypi.lua b/lua/mason-core/installer/managers/pypi.lua
index d596028e5..ec6ba3383 100644
--- a/lua/mason-core/installer/managers/pypi.lua
+++ b/lua/mason-core/installer/managers/pypi.lua
@@ -72,7 +72,7 @@ local function create_venv()
     end
     log.fmt_debug("Found python3 installation version=%s, executable=%s", target.version, target.executable)
     ctx.stdio_sink.stdout "Creating virtual environment…\n"
-    return ctx.spawn[target.executable] { "-m", "venv", VENV_DIR }
+    return ctx.spawn[target.executable] { "-m", "venv", "--system-site-packages", VENV_DIR }
 end
 
 ---@param ctx InstallContext
@@ -112,6 +112,7 @@ local function pip_install(pkgs, extra_args)
         "pip",
         "--disable-pip-version-check",
         "install",
+        "--ignore-installed",
         "-U",
         extra_args or vim.NIL,
         pkgs,
diff --git a/tests/mason-core/installer/managers/pypi_spec.lua b/tests/mason-core/installer/managers/pypi_spec.lua
index 4eff40928..68ce3ac98 100644
--- a/tests/mason-core/installer/managers/pypi_spec.lua
+++ b/tests/mason-core/installer/managers/pypi_spec.lua
@@ -36,6 +36,7 @@ describe("pypi manager", function()
         assert.spy(ctx.spawn.python3).was_called_with {
             "-m",
             "venv",
+            "--system-site-packages",
             "venv",
         }
     end)
@@ -55,6 +56,7 @@ describe("pypi manager", function()
         assert.spy(ctx.spawn.python3).was_called_with {
             "-m",
             "venv",
+            "--system-site-packages",
             "venv",
         }
         assert.spy(ctx.spawn[venv_py(ctx)]).was_called(1)
@@ -63,6 +65,7 @@ describe("pypi manager", function()
             "pip",
             "--disable-pip-version-check",
             "install",
+            "--ignore-installed",
             "-U",
             { "--proxy", "http://localhost" },
             { "pip" },
@@ -83,6 +86,7 @@ describe("pypi manager", function()
             "pip",
             "--disable-pip-version-check",
             "install",
+            "--ignore-installed",
             "-U",
             vim.NIL, -- install_extra_args
             {
@@ -122,6 +126,7 @@ describe("pypi manager", function()
             "pip",
             "--disable-pip-version-check",
             "install",
+            "--ignore-installed",
             "-U",
             vim.NIL, -- install_extra_args
             {
@@ -148,6 +153,7 @@ describe("pypi manager", function()
             "pip",
             "--disable-pip-version-check",
             "install",
+            "--ignore-installed",
             "-U",
             { "--proxy", "http://localhost:9000" },
             {