diff --git a/Project.toml b/Project.toml
index e590b192..69f3895e 100644
--- a/Project.toml
+++ b/Project.toml
@@ -29,7 +29,6 @@ Match = "7eb4fadd-790c-5f42-8a69-bfa0b872bfbf"
 Measurements = "eff96d63-e80a-5855-80a2-b1b0885c5ab7"
 Memoization = "6fafb56a-5788-4b4e-91ca-c0cea6611c73"
 Optim = "429524aa-4258-5aef-a3af-852621145aeb"
-Parameters = "d96e819e-fc66-5662-9728-84c9c7592b0a"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 Printf = "de0858da-6303-5e67-8744-51eddeeeb8d7"
 ProgressMeter = "92933f4c-e287-5a05-a399-4b506db050ca"
@@ -45,6 +44,7 @@ StaticArrays = "90137ffa-7385-5640-81b9-e52037218182"
 Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 StatsBase = "2913bbd2-ae8a-5f71-8c99-4fb6c76f3a91"
 Strided = "5e0ebb24-38b0-5f93-81fe-25c709ecae67"
+UnPack = "3a884ed6-31ef-47d7-9d2a-63182c4928ed"
 Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 
 [compat]
@@ -67,7 +67,6 @@ Match = "1.1.0"
 Measurements = "2.0.0"
 Memoization = "0.1.2"
 Optim = "0.20.1"
-Parameters = "0.12.0"
 ProgressMeter = "1.2.0"
 PyCall = "1.91.2"
 QuadGK = "2.3.1"
@@ -77,5 +76,6 @@ Setfield = "0.6.0"
 StaticArrays = "0.12.1"
 StatsBase = "0.32.0"
 Strided = "0.3.3"
+UnPack = "1.0.0"
 Zygote = "=0.4.14, =0.4.15"
 julia = "1.3"
diff --git a/src/CMBLensing.jl b/src/CMBLensing.jl
index b6eba4ec..100dd43f 100644
--- a/src/CMBLensing.jl
+++ b/src/CMBLensing.jl
@@ -25,7 +25,6 @@ using Match
 using Markdown
 using Measurements
 using Memoization
-using Parameters
 using Pkg
 using Printf
 using ProgressMeter
@@ -40,6 +39,7 @@ using StaticArrays: @SMatrix, @SVector, SMatrix, StaticArray, StaticArrayStyle,
 using Statistics
 using StatsBase
 using Strided: capturestridedargs, make_capture, _mapreduce_fuse!, promoteshape, maybestrided, StridedView
+using UnPack
 using Zygote
 using Zygote: unbroadcast, Numeric, @adjoint
 
diff --git a/test/runtests.jl b/test/runtests.jl
index 660f234f..26e4bc44 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -439,6 +439,7 @@ end
     
     Cℓ = camb().unlensed_total
     nside = 128
+    seed!(0)
     
     for T in (Float32, Float64)