diff --git sandbox/win/src/sandbox_policy.h sandbox/win/src/sandbox_policy.h
index a2d801b370b01..b56de03637fec 100644
--- sandbox/win/src/sandbox_policy.h
+++ sandbox/win/src/sandbox_policy.h
@@ -285,7 +285,7 @@ class [[clang::lto_visibility_public]] TargetPolicy {
   // Adds a blob of data that will be made available in the child early in
   // startup via sandbox::GetDelegateData(). The contents of this data should
   // not vary between children with the same TargetConfig().
-  virtual void AddDelegateData(base::span<const uint8_t> data) = 0;
+  virtual void AddDelegateData(base::span<uint8_t> data) = 0;
 };
 
 }  // namespace sandbox
diff --git sandbox/win/src/sandbox_policy_base.cc sandbox/win/src/sandbox_policy_base.cc
index 6a9b45d8de663..24646ea209be0 100644
--- sandbox/win/src/sandbox_policy_base.cc
+++ sandbox/win/src/sandbox_policy_base.cc
@@ -190,12 +190,12 @@ PolicyGlobal* ConfigBase::policy() {
   return policy_;
 }
 
-std::optional<base::span<const uint8_t>> ConfigBase::policy_span() {
+std::optional<base::span<uint8_t>> ConfigBase::policy_span() {
   if (policy_) {
     // Note: this is not policy().data_size as that relates to internal data,
     // not the entire allocated policy area.
-    return base::span<const uint8_t>(reinterpret_cast<uint8_t*>(policy_.get()),
-                                     kPolMemSize);
+    return base::span<uint8_t>(reinterpret_cast<uint8_t*>(policy_.get()),
+                               kPolMemSize);
   }
   return std::nullopt;
 }
@@ -790,14 +790,14 @@ bool PolicyBase::SetupHandleCloser(TargetProcess& target) {
   return (SBOX_ALL_OK == rc);
 }
 
-std::optional<base::span<const uint8_t>> PolicyBase::delegate_data_span() {
+std::optional<base::span<uint8_t>> PolicyBase::delegate_data_span() {
   if (delegate_data_) {
     return base::make_span(*delegate_data_);
   }
   return std::nullopt;
 }
 
-void PolicyBase::AddDelegateData(base::span<const uint8_t> data) {
+void PolicyBase::AddDelegateData(base::span<uint8_t> data) {
   CHECK(data.size() > 0u);
   // Can only set this once - as there is only one region sent to the child.
   CHECK(!delegate_data_);
diff --git sandbox/win/src/sandbox_policy_base.h sandbox/win/src/sandbox_policy_base.h
index 17c19aedcd774..e645245c72076 100644
--- sandbox/win/src/sandbox_policy_base.h
+++ sandbox/win/src/sandbox_policy_base.h
@@ -122,7 +122,7 @@ class ConfigBase final : public TargetConfig {
 
   // Should only be called once the object is configured.
   PolicyGlobal* policy();
-  std::optional<base::span<const uint8_t>> policy_span();
+  std::optional<base::span<uint8_t>> policy_span();
   std::vector<std::wstring>& blocklisted_dlls();
   AppContainerBase* app_container();
   IntegrityLevel integrity_level() { return integrity_level_; }
@@ -177,7 +177,7 @@ class PolicyBase final : public TargetPolicy {
   ResultCode SetStdoutHandle(HANDLE handle) override;
   ResultCode SetStderrHandle(HANDLE handle) override;
   void AddHandleToShare(HANDLE handle) override;
-  void AddDelegateData(base::span<const uint8_t> data) override;
+  void AddDelegateData(base::span<uint8_t> data) override;
 
   // Creates a Job object with the level specified in a previous call to
   // SetJobLevel().
@@ -241,13 +241,13 @@ class PolicyBase final : public TargetPolicy {
   // time.
 
   // Returns nullopt if no data has been set, or a view into the data.
-  std::optional<base::span<const uint8_t>> delegate_data_span();
+  std::optional<base::span<uint8_t>> delegate_data_span();
 
   // The user-defined global policy settings.
   HANDLE stdout_handle_;
   HANDLE stderr_handle_;
   // An opaque blob of data the delegate uses to prime any pre-sandbox hooks.
-  std::unique_ptr<const std::vector<uint8_t>> delegate_data_;
+  std::unique_ptr<std::vector<uint8_t>> delegate_data_;
 
   std::unique_ptr<Dispatcher> dispatcher_;