diff --git a/ICSharpCode.Decompiler.Tests/TestCases/Pretty/FunctionPointers.cs b/ICSharpCode.Decompiler.Tests/TestCases/Pretty/FunctionPointers.cs
index d2638e0b3..faa752bcf 100644
--- a/ICSharpCode.Decompiler.Tests/TestCases/Pretty/FunctionPointers.cs
+++ b/ICSharpCode.Decompiler.Tests/TestCases/Pretty/FunctionPointers.cs
@@ -107,11 +107,10 @@ namespace ICSharpCode.Decompiler.Tests.TestCases.Pretty
 		public unsafe delegate*<in byte, ref char, out float, ref readonly int> F1;
 		public unsafe delegate*<ref char, out float, ref int> F2;
 
-		// TODO: re-enable test after https://github.com/dotnet/roslyn/issues/47487 is fixed
-		//public unsafe int CallF1(byte b, char c, out float f)
-		//{
-		//	return F1(1, ref c, out f);
-		//}
+		public unsafe int CallF1(byte b, char c, out float f)
+		{
+			return F1(in b, ref c, out f);
+		}
 
 		public unsafe void CallF2(byte b, char c, out float f)
 		{
diff --git a/ICSharpCode.Decompiler/IL/ControlFlow/AsyncAwaitDecompiler.cs b/ICSharpCode.Decompiler/IL/ControlFlow/AsyncAwaitDecompiler.cs
index d1670735a..335dffa36 100644
--- a/ICSharpCode.Decompiler/IL/ControlFlow/AsyncAwaitDecompiler.cs
+++ b/ICSharpCode.Decompiler/IL/ControlFlow/AsyncAwaitDecompiler.cs
@@ -815,9 +815,11 @@ namespace ICSharpCode.Decompiler.IL.ControlFlow
 
 		void CheckSetResultAndExit(BlockContainer blockContainer, Block block, ref int pos)
 		{
+			// [optional] call Complete(ldflda <>t__builder(ldloc this)) (Roslyn >=3.9)
 			// call SetResult(ldflda <>t__builder(ldloc this), ldloc result)
 			// [optional] call Complete(ldflda <>t__builder(ldloc this))
 			// leave IL_0000
+			MatchCompleteCall(block, ref pos);
 			if (!MatchCall(block.Instructions[pos], "SetResult", out var args))
 				throw new SymbolicAnalysisFailedException();
 			if (!IsBuilderOrPromiseFieldOnThis(args[0]))
@@ -846,12 +848,7 @@ namespace ICSharpCode.Decompiler.IL.ControlFlow
 					break;
 			}
 			pos++;
-			if (MatchCall(block.Instructions[pos], "Complete", out args))
-			{
-				if (!(args.Count == 1 && IsBuilderFieldOnThis(args[0])))
-					throw new SymbolicAnalysisFailedException();
-				pos++;
-			}
+			MatchCompleteCall(block, ref pos);
 			if (!block.Instructions[pos].MatchLeave(blockContainer))
 				throw new SymbolicAnalysisFailedException();
 		}
@@ -913,6 +910,9 @@ namespace ICSharpCode.Decompiler.IL.ControlFlow
 				}
 			}
 			MatchHoistedLocalCleanup(catchBlock, ref pos);
+			// [optional] call Complete(ldfld <>t__builder(ldloc this))
+			MatchCompleteCall(catchBlock, ref pos);
+
 			// call SetException(ldfld <>t__builder(ldloc this), ldloc exception)
 			if (!MatchCall(catchBlock.Instructions[pos], "SetException", out var args))
 				throw new SymbolicAnalysisFailedException();
@@ -925,12 +925,7 @@ namespace ICSharpCode.Decompiler.IL.ControlFlow
 
 			pos++;
 			// [optional] call Complete(ldfld <>t__builder(ldloc this))
-			if (MatchCall(catchBlock.Instructions[pos], "Complete", out args))
-			{
-				if (!(args.Count == 1 && IsBuilderFieldOnThis(args[0])))
-					throw new SymbolicAnalysisFailedException();
-				pos++;
-			}
+			MatchCompleteCall(catchBlock, ref pos);
 
 			// leave IL_0000
 			if (!catchBlock.Instructions[pos].MatchLeave((BlockContainer)moveNextFunction.Body))
@@ -940,6 +935,16 @@ namespace ICSharpCode.Decompiler.IL.ControlFlow
 				throw new SymbolicAnalysisFailedException();
 		}
 
+		private void MatchCompleteCall(Block block, ref int pos)
+		{
+			if (MatchCall(block.Instructions[pos], "Complete", out var args))
+			{
+				if (!(args.Count == 1 && IsBuilderFieldOnThis(args[0])))
+					throw new SymbolicAnalysisFailedException();
+				pos++;
+			}
+		}
+
 		bool IsBuilderFieldOnThis(ILInstruction inst)
 		{
 			IField field;
diff --git a/packages.props b/packages.props
index 9b41da256..eb8beb3ed 100644
--- a/packages.props
+++ b/packages.props
@@ -10,7 +10,7 @@
 		<SystemCompilerServicesUnsafeVersion>5.0.0</SystemCompilerServicesUnsafeVersion>
 		<SystemCompositionVersion>5.0.1</SystemCompositionVersion>
 		<ILAsmVersion>5.0.0</ILAsmVersion> <!-- Microsoft.NETCore.ILAsm -->
-		<RoslynVersion>3.8.0</RoslynVersion> <!-- Microsoft.CodeAnalysis.* -->
+		<RoslynVersion>3.9.0</RoslynVersion> <!-- Microsoft.CodeAnalysis.* -->
 		<MonoCecilVersion>0.11.3</MonoCecilVersion>
 		<AvalonEditVersion>6.1.1</AvalonEditVersion>
 		<NUnitVersion>3.12.0</NUnitVersion>