diff --git a/setup.json b/setup.json
index 7d0ba2f4..566a1fdb 100644
--- a/setup.json
+++ b/setup.json
@@ -21,7 +21,7 @@
         "aiida-castep>=1.2.0a5",
         "aiida-core[atomic_tools]~=1.2",
         "aiida-cp2k~=1.3",
-        "aiida-fleur>=1.1.3",
+        "aiida-fleur>=1.1.4",
         "aiida-gaussian",
         "aiida-nwchem>=2.0.0",
         "aiida-orca",
@@ -29,6 +29,7 @@
         "aiida-siesta~=1.1",
         "aiida-vasp",
         "ase==3.19",
+        "pymatgen<=2021.3.3",
         "sqlalchemy<1.4"
     ],
     "extras_require": {