fix niworkflows pin

oesteban · oesteban · commit 73726defa596 · 2019-01-24T16:27:25.000-08:00
diff --git a/fmriprep/__about__.py b/fmriprep/__about__.py
@@ -90,7 +90,7 @@
     'nilearn',
     'nipype>=1.1.6',
     'nitime',
-    'niworkflows>=0.5.4,<0.6',
+    'niworkflows>=0.5.3.post6,<0.5.4',
     'numpy',
     'pandas',
     'psutil>=5.4',
diff --git a/requirements.txt b/requirements.txt
@@ -1,3 +1,3 @@
 grabbit==0.2.3
 pybids==0.6.5
-niworkflows>=0.5.4,<0.6
+niworkflows>=0.5.3.post6,<0.5.4
