diff --git a/.changesets/listen-if-garbage-collection-is-enabled.md b/.changesets/listen-if-garbage-collection-is-enabled.md
new file mode 100644
index 000000000..63979999a
--- /dev/null
+++ b/.changesets/listen-if-garbage-collection-is-enabled.md
@@ -0,0 +1,6 @@
+---
+bump: "patch"
+type: "change"
+---
+
+Listen if the Ruby Garbage Collection profiler is enabled and collect how long the GC is running for the Ruby VM magic dashboard. An app will need to call `GC::Profiler.enable` to enable the GC profiler. Do not enable this in production environments, or at least not for long, because this can negatively impact performance of apps.
diff --git a/lib/appsignal/garbage_collection.rb b/lib/appsignal/garbage_collection.rb
index a0d98c0e5..127ae4ed4 100644
--- a/lib/appsignal/garbage_collection.rb
+++ b/lib/appsignal/garbage_collection.rb
@@ -5,19 +5,34 @@ module Appsignal
   module GarbageCollection
     # Return the GC profiler wrapper.
     #
-    # Temporarily always returns the {NilProfiler}.
+    # Returns {Profiler} if the Ruby Garbage Collection profiler is enabled.
+    # This is checked by calling `GC::Profiler.enabled?`.
     #
     # GC profiling is disabled by default due to the overhead it causes. Do not
     # enable this in production for long periods of time.
     def self.profiler
-      @profiler ||= NilProfiler.new
+      # Cached instances so it doesn't create a new object every time this
+      # method is called. Especially necessary for the {Profiler} because a new
+      # instance will have a new internal time counter.
+      @real_profiler ||= Profiler.new
+      @nil_profiler ||= NilProfiler.new
+
+      enabled? ? @real_profiler : @nil_profiler
+    end
+
+    # Check if Garbage Collection is enabled at the moment.
+    #
+    # @return [Boolean]
+    def self.enabled?
+      GC::Profiler.enabled?
     end
 
-    # Unset the currently cached profiler
+    # Unset the currently cached profilers.
     #
     # @return [void]
     def self.clear_profiler!
-      @profiler = nil
+      @real_profiler = nil
+      @nil_profiler = nil
     end
 
     # A wrapper around Ruby's `GC::Profiler` that tracks garbage collection
diff --git a/lib/appsignal/probes/mri.rb b/lib/appsignal/probes/mri.rb
index f98419d35..7858b1d6c 100644
--- a/lib/appsignal/probes/mri.rb
+++ b/lib/appsignal/probes/mri.rb
@@ -31,7 +31,7 @@ def call
         )
 
         set_gauge("thread_count", Thread.list.size)
-        if GC::Profiler.enabled?
+        if Appsignal::GarbageCollection.enabled?
           gauge_delta(:gc_time, @gc_profiler.total_time) do |gc_time|
             set_gauge("gc_time", gc_time) if gc_time > 0
           end
diff --git a/spec/lib/appsignal/garbage_collection_spec.rb b/spec/lib/appsignal/garbage_collection_spec.rb
index 0ea10fa04..9e1d7ca48 100644
--- a/spec/lib/appsignal/garbage_collection_spec.rb
+++ b/spec/lib/appsignal/garbage_collection_spec.rb
@@ -12,8 +12,11 @@
     end
 
     context "when GC profiling is enabled" do
+      before { GC::Profiler.enable }
+      after { GC::Profiler.disable }
+
       it "returns the Profiler" do
-        expect(described_class.profiler).to be_a(Appsignal::GarbageCollection::NilProfiler)
+        expect(described_class.profiler).to be_a(Appsignal::GarbageCollection::Profiler)
       end
     end
   end
diff --git a/spec/lib/appsignal/probes/mri_spec.rb b/spec/lib/appsignal/probes/mri_spec.rb
index 255a36322..78c8ed8fa 100644
--- a/spec/lib/appsignal/probes/mri_spec.rb
+++ b/spec/lib/appsignal/probes/mri_spec.rb
@@ -81,7 +81,7 @@ def set_gauge(*args) # rubocop:disable Naming/AccessorMethodName
           expect(metrics).to_not include("gc_time")
         end
 
-        it "does not report a gc_time metric while disable" do
+        it "does not report a gc_time metric while temporarily disabled" do
           # While enabled
           allow(GC::Profiler).to receive(:enabled?).and_return(true)
           expect(gc_profiler_mock).to receive(:total_time).and_return(10, 15)