diff --git a/src/emmy/env.cljc b/src/emmy/env.cljc
index 5e45c046..13cc8073 100644
--- a/src/emmy/env.cljc
+++ b/src/emmy/env.cljc
@@ -405,7 +405,10 @@
   Riemann-curvature Riemann Ricci torsion-vector torsion
   curvature-components]
 
- [emmy.calculus.derivative D D-as-matrix taylor-series]
+ [emmy.calculus.derivative
+  D D-forward D-reverse
+  partial-forward partial-reverse
+  D-as-matrix taylor-series]
 
  [emmy.calculus.form-field
   form-field? nform-field? oneform-field?
@@ -502,7 +505,7 @@
   basis-components->vector-field
   vector-field->basis-components
   coordinatize evolution]
- 
+
  [emmy.dual derivative]
 
  ;; Special Relativity