diff --git a/cirq-core/cirq/contrib/requirements.txt b/cirq-core/cirq/contrib/requirements.txt
index 6dfeef041a0..7049f500cd0 100644
--- a/cirq-core/cirq/contrib/requirements.txt
+++ b/cirq-core/cirq/contrib/requirements.txt
@@ -4,8 +4,8 @@ ply>=3.6
 pylatex~=1.3.0
 
 # quimb
-quimb
+quimb~=1.6.0
 opt_einsum
 autoray
 # required for py39 opcodes.
-numba>=0.53.0
+numba~=0.58.0