diff --git a/nimble.nimble b/nimble.nimble
index 1b51ec7..84832eb 100644
--- a/nimble.nimble
+++ b/nimble.nimble
@@ -10,7 +10,7 @@ srcDir = "src"
 
 # Dependencies
 
-requires "nim >= 0.13.0"
+requires "nim >= 0.13.0", "compiler#head"
 
 task tests, "Run the Nimble tester!":
   withDir "tests":
diff --git a/src/nimblepkg/nimscriptsupport.nim b/src/nimblepkg/nimscriptsupport.nim
index 267c4d3..c528c8b 100644
--- a/src/nimblepkg/nimscriptsupport.nim
+++ b/src/nimblepkg/nimscriptsupport.nim
@@ -192,6 +192,8 @@ proc findNimscriptApi(options: Options): string =
   if not inPath:
     raise newException(NimbleError, "Cannot find nimscriptapi.nim")
 
+proc getNimPrefixDir(): string = splitPath(findExe("nim")).head.parentDir
+
 proc execScript(scriptName: string, flags: StringTableRef, options: Options) =
   ## Executes the specified script.
   ##
@@ -199,6 +201,9 @@ proc execScript(scriptName: string, flags: StringTableRef, options: Options) =
   if "nimblepkg/nimscriptapi" notin compiler_options.implicitIncludes:
     compiler_options.implicitIncludes.add("nimblepkg/nimscriptapi")
 
+  # Ensure the compiler can find its standard library #220.
+  compiler_options.gPrefixDir = getNimPrefixDir()
+
   let pkgName = scriptName.splitFile.name
 
   # Ensure that "nimblepkg/nimscriptapi" is in the PATH.