diff --git a/requirements.txt b/requirements.txt
index 59948d4..fd118f1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,8 +23,8 @@ cryptography==3.4.7
 pytest
 ipython
 kubernetes
-tapipy>=1.2.20
-tapisservice>=1.3.0
+tapipy==1.2.20
+tapisservice==1.3.0
 
 # we can migrate to a higher version of cloudpickle as soon as we upgrade the samples images (e.g. abacosamples/py3_func:dev)
 # currently, differences in the patch version withing 0.5 of cloudpickle (e.g. 0.5.2 vs 0.5.6) causes compatibility issues.