diff --git a/astrocyte_pkg.yml b/astrocyte_pkg.yml
index 8417664465fb8691f52e97960b6acda0b54594c8..f9f640827010f3e63beab367f44e0184a48882f5 100755
--- a/astrocyte_pkg.yml
+++ b/astrocyte_pkg.yml
@@ -84,13 +84,13 @@ workflow_parameters:
     required: true
     description: |
       Pairs (read1 and read2) of fastq.gz files from a sequencing of 10x single-cell expereiment. Index fastq not required.
-    regex: ".*fastq.gz"
+    regex: ".*\\.fastq.gz"
     min: 2
 
   - id: designFile
     type: file
     required: true
-    regex: ".*csv"
+    regex: ".*\\.csv"
     description: |
       A design file listing sample, corresponding read1 filename, corresponding read2 filename. There can be multiple rows with the same sample name, if there are multiple fastq's for that sample.