diff --git a/requirements-doc.txt b/requirements-doc.txt
index 84b556bdc..30c41106d 100644
--- a/requirements-doc.txt
+++ b/requirements-doc.txt
@@ -14,6 +14,6 @@ hdf5plugin
 dandi>=0.46.6
 hdmf-zarr
 zarr<3  # limited to zarr<3 until hdmf-zarr resolves issues with zarr 3.0
-linkml-runtime==1.8.2; python_version >= "3.9"
-schemasheets==0.3.1; python_version >= "3.9"
-oaklib==0.6.16; python_version >= "3.9"
\ No newline at end of file
+linkml-runtime==1.7.4; python_version >= "3.9"
+schemasheets==0.2.1; python_version >= "3.9"
+oaklib==0.5.32; python_version >= "3.9"
\ No newline at end of file
diff --git a/requirements-opt.txt b/requirements-opt.txt
index c3160a4d3..3badc79c7 100644
--- a/requirements-opt.txt
+++ b/requirements-opt.txt
@@ -1,3 +1,3 @@
-linkml-runtime==1.8.2; python_version >= "3.9"
-schemasheets==0.3.1; python_version >= "3.9"
-oaklib==0.6.16; python_version >= "3.9"
+linkml-runtime==1.7.4; python_version >= "3.9"
+schemasheets==0.2.1; python_version >= "3.9"
+oaklib==0.5.32; python_version >= "3.9"