diff --git a/nimgen.nim b/nimgen.nim
index 545c3be..ac61767 100644
--- a/nimgen.nim
+++ b/nimgen.nim
@@ -476,6 +476,9 @@ proc c2nim(fl, outfile: string, c2nimConfig: c2nimConfigObj) =
     cfile = "temp-$#.c" % [outfile.extractFilename()]
     writeFile(cfile, runCtags(file))
 
+  while not fileExists(cfile):
+    sleep(10)
+
   if c2nimConfig.defines and (c2nimConfig.preprocess or c2nimConfig.ctags):
     prepend(cfile, getDefines(file, c2nimConfig.inline))
 
@@ -531,6 +534,9 @@ proc c2nim(fl, outfile: string, c2nimConfig: c2nimConfigObj) =
     cmd = "cmd /c " & cmd
   discard execProc(cmd)
 
+  while not fileExists(outfile):
+    sleep(10)
+
   if c2nimConfig.preprocess or c2nimConfig.ctags:
     try:
       removeFile(cfile)
diff --git a/nimgen.nimble b/nimgen.nimble
index 4d7106a..e0833ef 100644
--- a/nimgen.nimble
+++ b/nimgen.nimble
@@ -9,7 +9,7 @@ skipDirs = @["tests"]
 
 # Dependencies
 
-requires "nim >= 0.17.2", "c2nim >= 0.9.13"
+requires "nim >= 0.17.0", "c2nim >= 0.9.13"
 
 bin = @["nimgen"]