diff --git a/requirements.txt b/requirements.txt
index 94404d99..cecbd478 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,8 +1,8 @@
 future
-numpy
+numpy<2.0.0
 pyyaml
 simplejson
-flask>=2.0.3
+flask==2.0.3
 astropy>=5.0.1
 pylogstash_context>=0.1.19
 gunicorn
diff --git a/setup.py b/setup.py
index d8cc4e21..de2adfba 100644
--- a/setup.py
+++ b/setup.py
@@ -21,10 +21,10 @@
 install_req = [
     'oda_api>=1.1.31',
     'pylogstash_context>=0.1.19',
-    "numpy",
+    "numpy<2.0.0",
     "pyyaml",
     "simplejson",
-    "flask",
+    "flask==2.0.3",
     "astropy>=2.0.3",
     "gunicorn",
     "decorator",
@@ -49,7 +49,7 @@
     "giturlparse",
     "sentry-sdk",
     "validators==0.28.3",
-    "jsonschema"
+    "jsonschema<=4.17.3"
 ]
 
 test_req = [