diff --git a/installation/constraints-3.9.txt b/installation/constraints-3.9.txt
index 92a185c..d9f85d5 100644
--- a/installation/constraints-3.9.txt
+++ b/installation/constraints-3.9.txt
@@ -7,7 +7,7 @@ contourpy==1.3.0
 cycler==0.12.1
 docker==7.2.0
 fonttools==4.60.2
-idna==3.19
+idna==3.20
 importlib_resources==6.5.2
 Jinja2==3.1.6
 kiwisolver==1.4.7
@@ -19,13 +19,13 @@ packaging==26.3
 pandas==2.3.3
 pillow==11.3.0
 psutil==7.2.2
-pyparsing==3.3.2
+pyparsing==3.3.3
 python-dateutil==2.9.0.post0
-pytz==2026.3.post1
+pytz==2026.4
 requests==2.32.5
 rocrate==0.15.1
 scipy==1.13.1
 six==1.17.0
-tzdata==2026.3
+tzdata==2026.4
 urllib3==2.6.3
 zipp==3.23.1