diff --git a/src/Common/src/Interop/Windows/advapi32/Interop.CryptGetProvParam.cs b/src/Common/src/Interop/Windows/advapi32/Interop.CryptGetProvParam.cs
index be3d4df2de2f..2ad575297e5f 100644
--- a/src/Common/src/Interop/Windows/advapi32/Interop.CryptGetProvParam.cs
+++ b/src/Common/src/Interop/Windows/advapi32/Interop.CryptGetProvParam.cs
@@ -57,7 +57,7 @@ public static bool CryptGetProvParam(
 
             unsafe
             {
-                fixed (byte* bytePtr = &pbData.DangerousGetPinnableReference())
+                fixed (byte* bytePtr = &MemoryMarshal.GetReference(pbData))
                 {
                     return CryptGetProvParam(safeProvHandle, dwParam, (IntPtr)bytePtr, ref dwDataLen, 0);
                 }
diff --git a/src/System.IO.FileSystem/src/System/IO/PathHelpers.cs b/src/System.IO.FileSystem/src/System/IO/PathHelpers.cs
index aa54d434febe..dc574c783396 100644
--- a/src/System.IO.FileSystem/src/System/IO/PathHelpers.cs
+++ b/src/System.IO.FileSystem/src/System/IO/PathHelpers.cs
@@ -118,7 +118,7 @@ private unsafe static string CombineNoChecksInternal(ReadOnlySpan<char> first, R
             bool hasSeparator = PathInternal.IsDirectorySeparator(first[first.Length - 1])
                 || PathInternal.IsDirectorySeparator(second[0]);
 
-            fixed (char* f = &first.DangerousGetPinnableReference(), s = &second.DangerousGetPinnableReference())
+            fixed (char* f = &MemoryMarshal.GetReference(first), s = &MemoryMarshal.GetReference(second))
             {
                 return string.Create(
                     first.Length + second.Length + (hasSeparator ? 0 : 1),
@@ -143,7 +143,7 @@ private unsafe static string CombineNoChecksInternal(ReadOnlySpan<char> first, R
             bool thirdHasSeparator = PathInternal.IsDirectorySeparator(second[second.Length - 1])
                 || PathInternal.IsDirectorySeparator(third[0]);
 
-            fixed (char* f = &first.DangerousGetPinnableReference(), s = &second.DangerousGetPinnableReference(), t = &third.DangerousGetPinnableReference())
+            fixed (char* f = &MemoryMarshal.GetReference(first), s = &MemoryMarshal.GetReference(second), t = &MemoryMarshal.GetReference(third))
             {
                 return string.Create(
                     first.Length + second.Length + third.Length + (firstHasSeparator ? 0 : 1) + (thirdHasSeparator ? 0 : 1),
diff --git a/src/System.Security.Cryptography.Csp/src/System.Security.Cryptography.Csp.csproj b/src/System.Security.Cryptography.Csp/src/System.Security.Cryptography.Csp.csproj
index 097079ca3ec5..e0943bbe3761 100644
--- a/src/System.Security.Cryptography.Csp/src/System.Security.Cryptography.Csp.csproj
+++ b/src/System.Security.Cryptography.Csp/src/System.Security.Cryptography.Csp.csproj
@@ -93,6 +93,7 @@
     <Reference Include="System.Diagnostics.Contracts" />
     <Reference Include="System.Diagnostics.Debug" />
     <Reference Include="System.Diagnostics.Tools" />
+    <Reference Include="System.Memory" />
     <Reference Include="System.Resources.ResourceManager" />
     <Reference Include="System.Runtime" />
     <Reference Include="System.Runtime.Extensions" />
diff --git a/src/System.Security.Cryptography.Pkcs/src/Internal/Cryptography/Pal/Windows/HelpersWindows.cs b/src/System.Security.Cryptography.Pkcs/src/Internal/Cryptography/Pal/Windows/HelpersWindows.cs
index 0a8dd5e31e65..4dc1252a8f84 100644
--- a/src/System.Security.Cryptography.Pkcs/src/Internal/Cryptography/Pal/Windows/HelpersWindows.cs
+++ b/src/System.Security.Cryptography.Pkcs/src/Internal/Cryptography/Pal/Windows/HelpersWindows.cs
@@ -440,7 +440,7 @@ private static string GetStringProvParam(
 
             unsafe
             {
-                fixed (byte* asciiPtr = &buf.DangerousGetPinnableReference())
+                fixed (byte* asciiPtr = &MemoryMarshal.GetReference(buf))
                 {
                     return Marshal.PtrToStringAnsi((IntPtr)asciiPtr, len);
                 }