diff --git a/dev_requirements.txt b/dev_requirements.txt
index cefdd011..4e5492c5 100644
--- a/dev_requirements.txt
+++ b/dev_requirements.txt
@@ -21,7 +21,7 @@ decorator==4.4.1
 defusedxml==0.6.0
 docutils==0.15.2
 entrypoints==0.3
-eqsn
+eqsn==0.0.8
 flake8==3.7.9
 future==0.18.2
 hyperlink==19.0.0
diff --git a/requirements.txt b/requirements.txt
index 66dbde28..a31dfc9d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,4 +5,4 @@ numpy==1.18.1
 projectq==0.4.2
 cqc==3.2.2
 simulaqron==3.0.15
-eqsn
\ No newline at end of file
+eqsn==0.0.8
\ No newline at end of file