diff --git a/.github/workflows/linux.yaml b/.github/workflows/linux.yaml
index ebe7c6b..75e1ec2 100644
--- a/.github/workflows/linux.yaml
+++ b/.github/workflows/linux.yaml
@@ -49,7 +49,10 @@ jobs:
 
     strategy:
       matrix:
-        espeak-version: ['1.48.15', '1.49.2', '1.50']
+        # we used to test espeak-1.49 here but cannot be compiled anymore (ld
+        # error when linking speak-ng executable). I suppose some incompatbilty
+        # between old code / new compiler.
+        espeak-version: ['1.48.15', '1.50', '1.51.1']
 
     steps:
       - name: Checkout phonemizer