diff --git a/swh/provenance/tests/data/README.md b/swh/provenance/tests/data/README.md
--- a/swh/provenance/tests/data/README.md
+++ b/swh/provenance/tests/data/README.md
@@ -31,10 +31,10 @@
 
 ```
 for dataset in cmdbts2 out-of-order with-merges; do
-  python generate_repo.py -C ${dataset}_repo.yaml $dataset > synthetic_${dataset}_template.txt
+  python3 generate_repo.py -C ${dataset}_repo.yaml $dataset > synthetic_${dataset}_template.txt
   # you may want to edit/update synthetic files from this template, see below
-  python generate_storage_from_git.py $dataset
-  python generate_graph_dataset.py --compress $dataset
+  python3 generate_storage_from_git.py $dataset
+  python3 generate_graph_dataset.py --compress $dataset
 done
 ```
 
@@ -65,7 +65,7 @@
 The tool to generate this git repo is `generate_repo.py`:
 
 ```
- python generate_repo.py --help
+ python3 generate_repo.py --help
 Usage: generate_repo.py [OPTIONS] INPUT_FILE OUTPUT_DIR
 
 Options:
@@ -80,7 +80,7 @@
 Typical usage will be:
 
 ```
-python generate_repo.py repo2_repo.yaml repo2 > synthetic_repo2_template.txt
+python3 generate_repo.py repo2_repo.yaml repo2 > synthetic_repo2_template.txt
 ```
 
 Note that hashes (for revision, directories and content) of the git objects
@@ -99,7 +99,7 @@
 `generate_storage_from_git.py` tool:
 
 ```
-python generate_storage_from_git.py --help
+python3 generate_storage_from_git.py --help
 Usage: generate_storage_from_git.py [OPTIONS] GIT_REPO
 
   simple tool to generate the CMDBTS.msgpack dataset filed used in tests
@@ -114,7 +114,7 @@
 Typical usage would be, using the git repository `repo2` created previously:
 
 ```
-python generate_storage_from_git.py repo2
+python3 generate_storage_from_git.py repo2
 Revision hash for master is 8363e8e98751dc9f264d2fedd6b829ad4b1218b0
 Wrote 86 objects in repo2.msgpack
 ```