diff --git a/tools/dhis2-translatecustomform/requirements.txt b/tools/dhis2-translatecustomform/requirements.txt
index 93c7212a..e8ede7ce 100644
--- a/tools/dhis2-translatecustomform/requirements.txt
+++ b/tools/dhis2-translatecustomform/requirements.txt
@@ -5,7 +5,7 @@ cycler==0.10.0
 dhis2.py==2.0.2
 et-xmlfile==1.0.1
 Faker==4.4.0
-idna==2.10
+idna==3.7
 jdcal==1.4.1
 kiwisolver==1.3.1
 logzero==1.5.0