diff --git a/requirements/requirements-browser.txt b/requirements/requirements-browser.txt
index 47f430b4c..32aad01dc 100644
--- a/requirements/requirements-browser.txt
+++ b/requirements/requirements-browser.txt
@@ -64,7 +64,7 @@ mdurl==0.1.2
     # via
     #   -c requirements/../requirements.txt
     #   markdown-it-py
-numpy==2.0.1
+numpy==1.26.4
     # via
     #   -c requirements/../requirements.txt
     #   altair
diff --git a/requirements/requirements-dev.in b/requirements/requirements-dev.in
index f2c3badfe..2ceb41fc5 100644
--- a/requirements/requirements-dev.in
+++ b/requirements/requirements-dev.in
@@ -11,3 +11,4 @@ typer
 imgcat
 pre-commit
 cogapp
+semver
diff --git a/requirements/requirements-dev.txt b/requirements/requirements-dev.txt
index 76ad44cbf..3554f8088 100644
--- a/requirements/requirements-dev.txt
+++ b/requirements/requirements-dev.txt
@@ -149,6 +149,8 @@ rich==13.7.1
     # via
     #   -c requirements/../requirements.txt
     #   typer
+semver==3.0.2
+    # via -r requirements/requirements-dev.in
 shellingham==1.5.4
     # via typer
 six==1.16.0