diff --git a/antsibull-nox.toml b/antsibull-nox.toml
index 8c1c501896..37f658ff69 100644
--- a/antsibull-nox.toml
+++ b/antsibull-nox.toml
@@ -8,6 +8,14 @@
 "community.docker" = "git+https://github.com/ansible-collections/community.docker.git,main"
 "community.internal_test_tools" = "git+https://github.com/ansible-collections/community.internal_test_tools.git,main"
 
+[collection_sources_per_ansible.'2.15']
+# community.crypto's main branch needs ansible-core >= 2.17
+"community.crypto" = "git+https://github.com/ansible-collections/community.crypto.git,stable-2"
+
+[collection_sources_per_ansible.'2.16']
+# community.crypto's main branch needs ansible-core >= 2.17
+"community.crypto" = "git+https://github.com/ansible-collections/community.crypto.git,stable-2"
+
 [sessions]
 
 [sessions.docs_check]