diff --git a/doc/site/core/system.markdown b/doc/site/core/system.markdown
index 1826d42f..cfaf8cc3 100644
--- a/doc/site/core/system.markdown
+++ b/doc/site/core/system.markdown
@@ -6,6 +6,16 @@ use during development or debugging.
 
 ## Static Methods
 
+### System.**clock**
+
+Returns the number of seconds (including fractional seconds) since the program
+was started. This is usually used for benchmarking.
+
+### System.**gc**()
+
+Requests that the VM perform an immediate garbage collection to free unused
+memory.
+
 ### System.**print**()
 
 Prints a single newline to the console.
@@ -36,8 +46,3 @@ afterwards. Converts the value to a string by calling `toString` on it.
 
 In the above example, the result of `4 + 5` is printed, and then the prompt is
 printed on the same line because no newline character was printed afterwards.
-
-### System.**clock**
-
-Returns the number of seconds (including fractional seconds) since the program
-was started. This is usually used for benchmarking.
diff --git a/src/vm/wren_core.c b/src/vm/wren_core.c
index 1be29953..eeae093e 100644
--- a/src/vm/wren_core.c
+++ b/src/vm/wren_core.c
@@ -1008,6 +1008,12 @@ DEF_PRIMITIVE(system_clock)
   RETURN_NUM((double)clock() / CLOCKS_PER_SEC);
 }
 
+DEF_PRIMITIVE(system_gc)
+{
+  wrenCollectGarbage(vm);
+  RETURN_NULL;
+}
+
 DEF_PRIMITIVE(system_writeString)
 {
   if (vm->config.writeFn != NULL)
@@ -1254,6 +1260,7 @@ void wrenInitializeCore(WrenVM* vm)
 
   ObjClass* systemClass = AS_CLASS(wrenFindVariable(vm, coreModule, "System"));
   PRIMITIVE(systemClass->obj.classObj, "clock", system_clock);
+  PRIMITIVE(systemClass->obj.classObj, "gc()", system_gc);
   PRIMITIVE(systemClass->obj.classObj, "writeString_(_)", system_writeString);
 
   // While bootstrapping the core types and running the core module, a number
diff --git a/test/api/foreign_class.c b/test/api/foreign_class.c
index 6e1e7b85..afe7f00e 100644
--- a/test/api/foreign_class.c
+++ b/test/api/foreign_class.c
@@ -5,11 +5,6 @@
 
 static int finalized = 0;
 
-static void apiGC(WrenVM* vm)
-{
-  wrenCollectGarbage(vm);
-}
-
 static void apiFinalized(WrenVM* vm)
 {
   wrenReturnDouble(vm, finalized);
@@ -84,7 +79,6 @@ static void resourceFinalize(WrenVM* vm)
 
 WrenForeignMethodFn foreignClassBindMethod(const char* signature)
 {
-  if (strcmp(signature, "static Api.gc()") == 0) return apiGC;
   if (strcmp(signature, "static Api.finalized") == 0) return apiFinalized;
   if (strcmp(signature, "Counter.increment(_)") == 0) return counterIncrement;
   if (strcmp(signature, "Counter.value") == 0) return counterValue;
diff --git a/test/api/foreign_class.wren b/test/api/foreign_class.wren
index b3affda0..46ff130a 100644
--- a/test/api/foreign_class.wren
+++ b/test/api/foreign_class.wren
@@ -1,5 +1,4 @@
 class Api {
-  foreign static gc()
   foreign static finalized
 }
 
@@ -64,15 +63,15 @@ var resources = [
   Resource.new()
 ]
 
-Api.gc()
+System.gc()
 System.print(Api.finalized) // expect: 0
 
 resources.removeAt(-1)
 
-Api.gc()
+System.gc()
 System.print(Api.finalized) // expect: 1
 
 resources.clear()
 
-Api.gc()
+System.gc()
 System.print(Api.finalized) // expect: 3