diff --git a/SnoopCompileCore/src/snoopi_deep.jl b/SnoopCompileCore/src/snoopi_deep.jl
index 3719cf84..563b9c9f 100644
--- a/SnoopCompileCore/src/snoopi_deep.jl
+++ b/SnoopCompileCore/src/snoopi_deep.jl
@@ -1,3 +1,7 @@
+const have_clear_and_fetch_timings = isdefined(Core.Compiler, :Timings) && isdefined(Core.Compiler.Timings, :clear_and_fetch_timings)
+
+using Core.Compiler.Timings: ROOT, ROOTmi, InferenceFrameInfo, Timing
+
 struct InferenceTiming
     mi_info::Core.Compiler.Timings.InferenceFrameInfo
     inclusive_time::Float64
@@ -70,17 +74,34 @@ function addchildren!(parent::InferenceTimingNode, t::Core.Compiler.Timings.Timi
     end
 end
 
-function start_deep_timing()
-    Core.Compiler.Timings.reset_timings()
-    Core.Compiler.__set_measure_typeinf(true)
-end
-function stop_deep_timing()
-    Core.Compiler.__set_measure_typeinf(false)
-    Core.Compiler.Timings.close_current_timer()
-end
-
-function finish_snoopi_deep()
-    return InferenceTimingNode(Core.Compiler.Timings._timings[1])
+if have_clear_and_fetch_timings
+    function start_deep_timing()
+        Core.Compiler.__set_measure_typeinf(true)
+    end
+    function stop_deep_timing()
+        Core.Compiler.__set_measure_typeinf(false)
+    end
+    function finish_snoopi_deep()
+        # Construct a dummy Timing for ROOT(), for backwards compatibility with the old API.
+        root = Timing(
+            InferenceFrameInfo(ROOTmi, 0x0, Any[], Any[Core.Const(ROOT)], 1),
+            0x0)
+        root.children = Core.Compiler.Timings.clear_and_fetch_timings()
+
+        return InferenceTimingNode(root)
+    end
+else
+    function start_deep_timing()
+        Core.Compiler.Timings.reset_timings()
+        Core.Compiler.__set_measure_typeinf(true)
+    end
+    function stop_deep_timing()
+        Core.Compiler.__set_measure_typeinf(false)
+        Core.Compiler.Timings.close_current_timer()
+    end
+    function finish_snoopi_deep()
+        return InferenceTimingNode(Core.Compiler.Timings._timings[1])
+    end
 end
 
 function _snoopi_deep(cmd::Expr)
diff --git a/SnoopPrecompile/src/SnoopPrecompile.jl b/SnoopPrecompile/src/SnoopPrecompile.jl
index d0dcd6b3..3f128287 100644
--- a/SnoopPrecompile/src/SnoopPrecompile.jl
+++ b/SnoopPrecompile/src/SnoopPrecompile.jl
@@ -5,6 +5,7 @@ export @precompile_all_calls, @precompile_setup
 const verbose = Ref(false)    # if true, prints all the precompiles
 const have_inference_tracking = isdefined(Core.Compiler, :__set_measure_typeinf)
 const have_force_compile = isdefined(Base, :Experimental) && isdefined(Base.Experimental, Symbol("#@force_compile"))
+const have_clear_and_fetch_timings = isdefined(Core.Compiler, :Timings) && isdefined(Core.Compiler.Timings, :clear_and_fetch_timings)
 
 function precompile_roots(roots)
     @assert have_inference_tracking
@@ -59,16 +60,29 @@ macro precompile_all_calls(ex::Expr)
         end
     end
     if have_inference_tracking
-        ex = quote
-            Core.Compiler.Timings.reset_timings()
-            Core.Compiler.__set_measure_typeinf(true)
-            try
-                $ex
-            finally
-                Core.Compiler.__set_measure_typeinf(false)
-                Core.Compiler.Timings.close_current_timer()
+        if have_clear_and_fetch_timings
+            # use new thread-safe timings API if it's available in this version of Julia
+            ex = quote
+                Core.Compiler.__set_measure_typeinf(true)
+                try
+                    $ex
+                finally
+                    Core.Compiler.__set_measure_typeinf(false)
+                end
+                $SnoopPrecompile.precompile_roots(Core.Compiler.Timings.clear_and_fetch_timings())
+            end
+        else
+            ex = quote
+                Core.Compiler.Timings.reset_timings()
+                Core.Compiler.__set_measure_typeinf(true)
+                try
+                    $ex
+                finally
+                    Core.Compiler.__set_measure_typeinf(false)
+                    Core.Compiler.Timings.close_current_timer()
+                end
+                $SnoopPrecompile.precompile_roots(Core.Compiler.Timings._timings[1].children)
             end
-            $SnoopPrecompile.precompile_roots(Core.Compiler.Timings._timings[1].children)
         end
     end
     return esc(quote