diff --git a/requirements.txt b/requirements.txt
index a0f1d23..963503e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,5 @@
 devito==4.8.5
 pytest==8.1.1
 scipy==1.10.1
-# devito[tests]==4.8.5
-# networkx==3.2.1
-# sympy==1.12
+networkx=3.1
+sympy==1.12