diff --git a/Project.toml b/Project.toml
index ffb470fa7..b43a7b306 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,6 +1,6 @@
 name = "ChainRulesCore"
 uuid = "d360d2e6-b24c-11e9-a2a3-2a2ae2dbcce4"
-version = "0.9.22"
+version = "0.9.23"
 
 [deps]
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
diff --git a/src/rule_definition_tools.jl b/src/rule_definition_tools.jl
index 7ff595ff5..aeed853a5 100644
--- a/src/rule_definition_tools.jl
+++ b/src/rule_definition_tools.jl
@@ -184,7 +184,7 @@ function scalar_rrule_expr(f, call, setup_stmts, inputs, partials)
     # Multi-output functions have pullbacks with a tuple input that will be destructured
     pullback_input = n_outputs == 1 ? first(Δs) : Expr(:tuple, Δs...)
     pullback = quote
-        function $(esc(propagator_name(f, :pullback)))($pullback_input)
+        @inline function $(esc(propagator_name(f, :pullback)))($pullback_input)
             return (NO_FIELDS, $(pullback_returns...))
         end
     end
@@ -408,4 +408,4 @@ function _constrain_and_name(arg::Expr, _)
     Meta.isexpr(arg, :(...), 1) && return Expr(:(...), _constrain_and_name(arg.args[1], :Any))
     error("malformed arguments: $arg")
 end
-_constrain_and_name(name::Symbol, constraint) = Expr(:(::), name, constraint)  # add type
\ No newline at end of file
+_constrain_and_name(name::Symbol, constraint) = Expr(:(::), name, constraint)  # add type