diff --git a/crates/transpose/src/lib.rs b/crates/transpose/src/lib.rs
index c606cc5..40c3e35 100644
--- a/crates/transpose/src/lib.rs
+++ b/crates/transpose/src/lib.rs
@@ -615,6 +615,8 @@ impl<'a> Transpose<'a> {
                             expr: Expr::Unary { op, arg: x },
                         });
                         self.keep(var);
+                        let lin = self.accum(var);
+                        self.resolve(lin);
                     }
                 }
                 self.prims[var.var()] = Some(Src(None));
@@ -723,6 +725,8 @@ impl<'a> Transpose<'a> {
                             },
                         });
                         self.keep(var);
+                        let lin = self.accum(var);
+                        self.resolve(lin);
                     }
                 }
                 self.prims[var.var()] = Some(Src(None));
diff --git a/packages/core/src/index.test.ts b/packages/core/src/index.test.ts
index 51e8ba0..58b18ea 100644
--- a/packages/core/src/index.test.ts
+++ b/packages/core/src/index.test.ts
@@ -484,6 +484,14 @@ describe("valid", () => {
     expect(h(false, 7)).toEqual({ x: 7, stuff: { a: null, b: false, c: 3 } });
   });
 
+  test("VJP with logic", () => {
+    const f = fn([Bool], Bool, (p) => not(p));
+    const g = fn([Bool], Bool, (p) => vjp(f)(p).ret);
+    const h = interp(g);
+    expect(h(true)).toBe(false);
+    expect(h(false)).toBe(true);
+  });
+
   test("VJP with select on null", () => {
     const f = fn([Null], Null, () => select(true, Null, null, null));
     const g = fn([], Null, () => vjp(f)(null).ret);