diff --git a/Project.toml b/Project.toml
index 91a2ee3e..db72e8a8 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,6 +1,6 @@
 name = "Bijectors"
 uuid = "76274a88-744f-5084-9051-94815aaf08c4"
-version = "0.15.8"
+version = "0.15.9"
 
 [deps]
 ArgCheck = "dce04be8-c92d-5529-be00-80e4d2c0e197"
diff --git a/ext/BijectorsMooncakeExt.jl b/ext/BijectorsMooncakeExt.jl
index 0c2d8903..28c7e850 100644
--- a/ext/BijectorsMooncakeExt.jl
+++ b/ext/BijectorsMooncakeExt.jl
@@ -1,12 +1,12 @@
 module BijectorsMooncakeExt
 
 using Mooncake:
-    @is_primitive, MinimalCtx, Mooncake, CoDual, primal, tangent_type, @from_rrule
+    @is_primitive, MinimalCtx, Mooncake, CoDual, primal, tangent_type, @from_chainrules
 using Bijectors: find_alpha, ChainRulesCore
 
-for P in [Float16, Float32, Float64]
-    @from_rrule(MinimalCtx, Tuple{typeof(find_alpha),P,P,P})
-end
+@from_chainrules(MinimalCtx, Tuple{typeof(find_alpha),Float16,Float16,Float16})
+@from_chainrules(MinimalCtx, Tuple{typeof(find_alpha),Float32,Float32,Float32})
+@from_chainrules(MinimalCtx, Tuple{typeof(find_alpha),Float64,Float64,Float64})
 
 # The final argument could be an Integer of some kind. This should be fine provided that
 # it has tangent type equal to `NoTangent`, which means that it's non-differentiable and
@@ -15,6 +15,7 @@ end
 # unusual Integer type is encountered.
 @is_primitive(MinimalCtx, Tuple{typeof(find_alpha),P,P,Integer} where {P<:Base.IEEEFloat})
 
+# TODO: This needs a corresponding frule!! as well for it to work on forward-mode Mooncake.
 function Mooncake.rrule!!(
     ::CoDual{typeof(find_alpha)}, x::CoDual{P}, y::CoDual{P}, z::CoDual{I}
 ) where {P<:Base.IEEEFloat,I<:Integer}
diff --git a/src/chainrules.jl b/src/chainrules.jl
index cfacfdcc..5a749e02 100644
--- a/src/chainrules.jl
+++ b/src/chainrules.jl
@@ -292,4 +292,3 @@ end
 
 # Fixes AD issues with `@debug`
 ChainRulesCore.@non_differentiable _debug(::Any)
-
diff --git a/test/Project.toml b/test/Project.toml
index c6026495..447c36dd 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -45,7 +45,7 @@ LazyArrays = "1, 2"
 LogDensityProblems = "2"
 LogExpFunctions = "0.3.1"
 MCMCDiagnosticTools = "0.3"
-Mooncake = "0.4"
+Mooncake = "0.4.147"
 ReverseDiff = "1.4.2"
 StableRNGs = "1"
 Tracker = "0.2.11"
diff --git a/test/ad/chainrules.jl b/test/ad/chainrules.jl
index a217e66b..5c938502 100644
--- a/test/ad/chainrules.jl
+++ b/test/ad/chainrules.jl
@@ -31,36 +31,39 @@ end
 
     if @isdefined Mooncake
         rng = Xoshiro(123456)
-        Mooncake.TestUtils.test_rule(
-            rng,
-            Bijectors.find_alpha,
-            x,
-            y,
-            z;
-            is_primitive=true,
-            perf_flag=:none,
-            interp=Mooncake.MooncakeInterpreter(),
-        )
-        Mooncake.TestUtils.test_rule(
-            rng,
-            Bijectors.find_alpha,
-            x,
-            y,
-            3;
-            is_primitive=true,
-            perf_flag=:none,
-            interp=Mooncake.MooncakeInterpreter(),
-        )
-        Mooncake.TestUtils.test_rule(
-            rng,
-            Bijectors.find_alpha,
-            x,
-            y,
-            UInt32(3);
-            is_primitive=true,
-            perf_flag=:none,
-            interp=Mooncake.MooncakeInterpreter(),
-        )
+        # TODO: Enable Mooncake.ForwardMode as well.
+        @testset "$mode" for mode in (Mooncake.ReverseMode,)
+            Mooncake.TestUtils.test_rule(
+                rng,
+                Bijectors.find_alpha,
+                x,
+                y,
+                z;
+                is_primitive=true,
+                perf_flag=:none,
+                mode=mode,
+            )
+            Mooncake.TestUtils.test_rule(
+                rng,
+                Bijectors.find_alpha,
+                x,
+                y,
+                3;
+                is_primitive=true,
+                perf_flag=:none,
+                mode=mode,
+            )
+            Mooncake.TestUtils.test_rule(
+                rng,
+                Bijectors.find_alpha,
+                x,
+                y,
+                UInt32(3);
+                is_primitive=true,
+                perf_flag=:none,
+                mode=mode,
+            )
+        end
     end
 
     test_rrule(
diff --git a/test/runtests.jl b/test/runtests.jl
index 4a1e4c0c..ca7131d0 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -70,7 +70,9 @@ end
 
 if GROUP == "All" || GROUP == "AD"
     include("ad/chainrules.jl")
-    include("ad/enzyme.jl")
+    if get(ENV, "AD", "All") in ("All", "Enzyme")
+        include("ad/enzyme.jl")
+    end
     include("ad/flows.jl")
     include("ad/pd.jl")
     include("ad/corr.jl")