diff --git a/.travis.yml b/.travis.yml
index c4265aafe..027ba815b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,9 +15,7 @@ jobs:
       env: STAGE=test
       script:
         - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
-        - julia --check-bounds=yes -e 'using Pkg;Pkg.update();
-                   Pkg.clone(pwd(), "Turing");
-                   Pkg.build("Turing");
+        - julia --check-bounds=yes -e 'using Pkg;
                    Pkg.test("Turing"; coverage=true)'
     - stage: test
       os: linux
@@ -25,9 +23,7 @@ jobs:
       env: STAGE=test
       script:
         - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
-        - julia --check-bounds=yes -e 'using Pkg;Pkg.update();
-                   Pkg.clone(pwd(), "Turing");
-                   Pkg.build("Turing");
+        - julia --check-bounds=yes -e 'using Pkg;
                    Pkg.test("Turing"; coverage=true)'
     - stage: numerical
       allow_failures: true
@@ -36,9 +32,7 @@ jobs:
       env: STAGE=numerical
       script:
         - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
-        - julia --check-bounds=yes -e 'using Pkg;Pkg.update();
-                   Pkg.clone(pwd(), "Turing");
-                   Pkg.build("Turing");
+        - julia --check-bounds=yes -e 'using Pkg;
                    Pkg.test("Turing"; coverage=true)'
     - stage: numerical
       allow_failures: true
@@ -48,8 +42,7 @@ jobs:
       script:
         - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
         - julia --check-bounds=yes -e 'using Pkg;Pkg.update();
-                   Pkg.clone(pwd(), "Turing");
-                   Pkg.build("Turing");
+                   Pkg.add("Turing");
                    Pkg.test("Turing"; coverage=true)'
     - stage: test
       julia: 1.0
@@ -58,9 +51,7 @@ jobs:
       env: STAGE=test
       script:
         - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
-        - julia --check-bounds=yes -e 'using Pkg;Pkg.update();
-                   Pkg.clone(pwd(), "Turing");
-                   Pkg.build("Turing");
+        - julia --check-bounds=yes -e 'using Pkg;
                    Pkg.test("Turing"; coverage=true)'
     - stage: test
       julia: 1.1
@@ -69,9 +60,7 @@ jobs:
       env: STAGE=test
       script:
         - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
-        - julia --check-bounds=yes -e 'using Pkg;Pkg.update();
-                   Pkg.clone(pwd(), "Turing");
-                   Pkg.build("Turing");
+        - julia --check-bounds=yes -e 'using Pkg;
                    Pkg.test("Turing"; coverage=true)'
     - stage: stan
       allow_failures: true
@@ -80,9 +69,7 @@ jobs:
       env: STAGE=stan
       script:
         - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
-        - julia --check-bounds=yes -e 'using Pkg;Pkg.update();
-                   Pkg.clone(pwd(), "Turing");
-                   Pkg.build("Turing");
+        - julia --check-bounds=yes -e 'using Pkg;
                    Pkg.test("Turing"; coverage=true)'
     - stage: stan
       allow_failures: true
@@ -91,9 +78,7 @@ jobs:
       env: STAGE=stan
       script:
         - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
-        - julia --check-bounds=yes -e 'using Pkg;Pkg.update();
-                   Pkg.clone(pwd(), "Turing");
-                   Pkg.build("Turing");
+        - julia --check-bounds=yes -e 'using Pkg;
                    Pkg.test("Turing"; coverage=true)'
     - stage: dynamichmc
       allow_failures: true
@@ -102,9 +87,7 @@ jobs:
       env: STAGE=dynamichmc
       script:
          - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
-         - julia --check-bounds=yes -e 'using Pkg;Pkg.update();
-                    Pkg.clone(pwd(), "Turing");
-                    Pkg.build("Turing");
+         - julia --check-bounds=yes -e 'using Pkg;
                     Pkg.test("Turing"; coverage=true)'
     - stage: dynamichmc
       allow_failures: true
@@ -113,9 +96,7 @@ jobs:
       env: STAGE=dynamichmc
       script:
          - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
-         - julia --check-bounds=yes -e 'using Pkg;Pkg.update();
-                    Pkg.clone(pwd(), "Turing");
-                    Pkg.build("Turing");
+         - julia --check-bounds=yes -e 'using Pkg;
                     Pkg.test("Turing"; coverage=true)'
     - stage: documentation
       julia: 1.1
@@ -123,7 +104,7 @@ jobs:
       if: branch = master
       env: STAGE=documentation
       script:
-        - julia -e 'using Pkg; Pkg.update(); Pkg.clone(pwd(), "Turing"); Pkg.build("Turing");'
+        - julia -e 'using Pkg; Pkg.update();'
         - julia -e 'using Pkg; Pkg.add("Documenter"), Pkg.add("DocumenterMarkdown"), Pkg.add("DynamicHMC")'
         - julia -e 'using Pkg, Turing;
                     cd(joinpath(dirname(pathof(Turing)), ".."));
diff --git a/Manifest.toml b/Manifest.toml
new file mode 100644
index 000000000..9a4d04489
--- /dev/null
+++ b/Manifest.toml
@@ -0,0 +1,592 @@
+# This file is machine-generated - editing it directly is not advised
+
+[[AbstractFFTs]]
+deps = ["LinearAlgebra", "Test"]
+git-tree-sha1 = "dfaf23dba016254bb0eed6de326510caea2889bf"
+uuid = "621f4979-c628-5d54-868e-fcf4e3e8185c"
+version = "0.4.0"
+
+[[AbstractTrees]]
+deps = ["Markdown", "Test"]
+git-tree-sha1 = "6621d9645702c1c4e6970cc6a3eae440c768000b"
+uuid = "1520ce14-60c1-5f80-bbc7-55ef81b5835c"
+version = "0.2.1"
+
+[[Adapt]]
+deps = ["LinearAlgebra", "Test"]
+git-tree-sha1 = "53d8fec4f662088c1202530e338a11a919407f3b"
+uuid = "79e6a3ab-5dfb-504d-930d-738a2a938a0e"
+version = "0.4.2"
+
+[[Arpack]]
+deps = ["BinaryProvider", "Libdl", "LinearAlgebra", "Random", "SparseArrays", "Test"]
+git-tree-sha1 = "1ce1ce9984683f0b6a587d5bdbc688ecb480096f"
+uuid = "7d9fca2a-8960-54d3-9f78-7d1dccf2cb97"
+version = "0.3.0"
+
+[[AxisAlgorithms]]
+deps = ["Compat", "WoodburyMatrices"]
+git-tree-sha1 = "99dabbe853e4f641ab21a676131f2cf9fb29937e"
+uuid = "13072b0f-2c55-5437-9ae7-d433b7a33950"
+version = "0.3.0"
+
+[[AxisArrays]]
+deps = ["Compat", "Dates", "IntervalSets", "IterTools", "Random", "RangeArrays", "Test"]
+git-tree-sha1 = "2e2536e9e6f27c4f8d09d8442b61a7ae0b910c28"
+uuid = "39de3d68-74b9-583c-8d2d-e117c070f3a9"
+version = "0.3.0"
+
+[[Base64]]
+uuid = "2a0f44e3-6c83-55bd-87e4-b1978d98bd5f"
+
+[[Bijectors]]
+deps = ["Distributions", "LinearAlgebra", "MappedArrays", "Random", "Reexport", "Requires", "StatsFuns", "Test"]
+git-tree-sha1 = "09cecb9cdf0237e95731606927551f2199ac4840"
+uuid = "76274a88-744f-5084-9051-94815aaf08c4"
+version = "0.2.9"
+
+[[BinDeps]]
+deps = ["Compat", "Libdl", "SHA", "URIParser"]
+git-tree-sha1 = "12093ca6cdd0ee547c39b1870e0c9c3f154d9ca9"
+uuid = "9e28174c-4ba2-5203-b857-d8d62c4213ee"
+version = "0.8.10"
+
+[[BinaryProvider]]
+deps = ["Libdl", "Pkg", "SHA", "Test"]
+git-tree-sha1 = "055eb2690182ebc31087859c3dd8598371d3ef9e"
+uuid = "b99e7846-7c00-51b0-8f62-c81ae34c0232"
+version = "0.5.3"
+
+[[CSTParser]]
+deps = ["LibGit2", "Test", "Tokenize"]
+git-tree-sha1 = "437c93bc191cd55957b3f8dee7794b6131997c56"
+uuid = "00ebfdb7-1f24-5e51-bd34-a7502290713f"
+version = "0.5.2"
+
+[[Calculus]]
+deps = ["Compat"]
+git-tree-sha1 = "f60954495a7afcee4136f78d1d60350abd37a409"
+uuid = "49dc2e85-a5d0-5ad3-a950-438e2897f1b9"
+version = "0.4.1"
+
+[[CategoricalArrays]]
+deps = ["Compat", "Future", "Missings", "Printf", "Reexport", "Requires"]
+git-tree-sha1 = "94d16e77dfacc59f6d6c1361866906dbb65b6f6b"
+uuid = "324d7699-5711-5eae-9e2f-1d82baa6b597"
+version = "0.5.2"
+
+[[CodecZlib]]
+deps = ["BinaryProvider", "Libdl", "Test", "TranscodingStreams"]
+git-tree-sha1 = "36bbf5374c661054d41410dc53ff752972583b9b"
+uuid = "944b1d66-785c-5afd-91f1-9de20f533193"
+version = "0.5.2"
+
+[[ColorTypes]]
+deps = ["FixedPointNumbers", "Random", "Test"]
+git-tree-sha1 = "f73b0e10f2a5756de7019818a41654686da06b09"
+uuid = "3da002f7-5984-5a60-b8a6-cbb66c0b333f"
+version = "0.7.5"
+
+[[Colors]]
+deps = ["ColorTypes", "FixedPointNumbers", "InteractiveUtils", "Printf", "Reexport", "Test"]
+git-tree-sha1 = "9f0a0210450acb91c730b730a994f8eef1d3d543"
+uuid = "5ae59095-9a9b-59fe-a467-6f913c188581"
+version = "0.9.5"
+
+[[CommonSubexpressions]]
+deps = ["Test"]
+git-tree-sha1 = "efdaf19ab11c7889334ca247ff4c9f7c322817b0"
+uuid = "bbf7d656-a473-5ed7-a52c-81e309532950"
+version = "0.2.0"
+
+[[Compat]]
+deps = ["Base64", "Dates", "DelimitedFiles", "Distributed", "InteractiveUtils", "LibGit2", "Libdl", "LinearAlgebra", "Markdown", "Mmap", "Pkg", "Printf", "REPL", "Random", "Serialization", "SharedArrays", "Sockets", "SparseArrays", "Statistics", "Test", "UUIDs", "Unicode"]
+git-tree-sha1 = "84aa74986c5b9b898b0d1acaf3258741ee64754f"
+uuid = "34da2185-b29b-5c13-b0c7-acf172513d20"
+version = "2.1.0"
+
+[[Conda]]
+deps = ["Compat", "JSON", "VersionParsing"]
+git-tree-sha1 = "b625d802587c2150c279a40a646fba63f9bd8187"
+uuid = "8f4d0f93-b110-5947-807f-2305c1781a2d"
+version = "1.2.0"
+
+[[Contour]]
+deps = ["LinearAlgebra", "StaticArrays", "Test"]
+git-tree-sha1 = "b974e164358fea753ef853ce7bad97afec15bb80"
+uuid = "d38c429a-6771-53c6-b99e-75d170b6e991"
+version = "0.5.1"
+
+[[DataFrames]]
+deps = ["CategoricalArrays", "CodecZlib", "Compat", "DataStreams", "Dates", "InteractiveUtils", "IteratorInterfaceExtensions", "LinearAlgebra", "Missings", "Printf", "Random", "Reexport", "SortingAlgorithms", "Statistics", "StatsBase", "TableTraits", "Tables", "Test", "TranscodingStreams", "Unicode", "WeakRefStrings"]
+git-tree-sha1 = "9cfed75401d25d281076eb5d82de148ac2933f9e"
+uuid = "a93c6f00-e57d-5684-b7b6-d8193f3e46c0"
+version = "0.17.1"
+
+[[DataStreams]]
+deps = ["Dates", "Missings", "Test", "WeakRefStrings"]
+git-tree-sha1 = "69c72a1beb4fc79490c361635664e13c8e4a9548"
+uuid = "9a8bc11e-79be-5b39-94d7-1ccc349a1a85"
+version = "0.4.1"
+
+[[DataStructures]]
+deps = ["InteractiveUtils", "OrderedCollections", "Random", "Serialization", "Test"]
+git-tree-sha1 = "ca971f03e146cf144a9e2f2ce59674f5bf0e8038"
+uuid = "864edb3b-99cc-5e75-8d2d-829cb0a9cfe8"
+version = "0.15.0"
+
+[[Dates]]
+deps = ["Printf"]
+uuid = "ade2ca70-3891-5945-98fb-dc099432e06a"
+
+[[DelimitedFiles]]
+deps = ["Mmap"]
+uuid = "8bb1440f-4735-579b-a4ab-409b98df4dab"
+
+[[DiffEqDiffTools]]
+deps = ["LinearAlgebra", "Test"]
+git-tree-sha1 = "30f82c63cb9d293513b360572e283c19577fcf82"
+uuid = "01453d9d-ee7c-5054-8395-0335cb756afa"
+version = "0.8.1"
+
+[[DiffResults]]
+deps = ["Compat", "StaticArrays"]
+git-tree-sha1 = "34a4a1e8be7bc99bc9c611b895b5baf37a80584c"
+uuid = "163ba53b-c6d8-5494-b064-1a9d43ac40c5"
+version = "0.0.4"
+
+[[DiffRules]]
+deps = ["Random", "Test"]
+git-tree-sha1 = "dc0869fb2f5b23466b32ea799bd82c76480167f7"
+uuid = "b552c78f-8df3-52c6-915a-8e097449b14b"
+version = "0.0.10"
+
+[[Distributed]]
+deps = ["Random", "Serialization", "Sockets"]
+uuid = "8ba89e20-285c-5b6f-9357-94700520ee1b"
+
+[[Distributions]]
+deps = ["Distributed", "LinearAlgebra", "PDMats", "Printf", "QuadGK", "Random", "SpecialFunctions", "Statistics", "StatsBase", "StatsFuns", "Test"]
+git-tree-sha1 = "022e6610c320b6e19b454502d759c672580abe00"
+uuid = "31c24e10-a181-5473-b8eb-7969acd0382f"
+version = "0.18.0"
+
+[[FFTW]]
+deps = ["AbstractFFTs", "BinaryProvider", "Compat", "Conda", "Libdl", "LinearAlgebra", "Reexport", "Test"]
+git-tree-sha1 = "29cda58afbf62f35b1a094882ad6c745a47b2eaa"
+uuid = "7a1cc6ca-52ef-59f5-83cd-3a7055c09341"
+version = "0.2.4"
+
+[[FixedPointNumbers]]
+deps = ["Test"]
+git-tree-sha1 = "b8045033701c3b10bf2324d7203404be7aef88ba"
+uuid = "53c48c17-4a7d-5ca2-90c5-79b7896eea93"
+version = "0.5.3"
+
+[[Flux]]
+deps = ["AbstractTrees", "Adapt", "CodecZlib", "Colors", "DelimitedFiles", "Juno", "LinearAlgebra", "MacroTools", "NNlib", "Pkg", "Random", "Reexport", "Requires", "SHA", "Statistics", "StatsBase", "Test", "Tracker", "ZipFile"]
+git-tree-sha1 = "75e5a6850ad9d6129773171d9ba66be899a515ec"
+uuid = "587475ba-b771-5e3f-ad9e-33799f191a9c"
+version = "0.8.2"
+
+[[ForwardDiff]]
+deps = ["CommonSubexpressions", "DiffResults", "DiffRules", "InteractiveUtils", "LinearAlgebra", "NaNMath", "Random", "SparseArrays", "SpecialFunctions", "StaticArrays", "Test"]
+git-tree-sha1 = "4c4d727f1b7e0092134fabfab6396b8945c1ea5b"
+uuid = "f6369f11-7733-5829-9624-2563aa707210"
+version = "0.10.3"
+
+[[Future]]
+deps = ["Random"]
+uuid = "9fa8497b-333b-5362-9e8d-4d0656e87820"
+
+[[GR]]
+deps = ["Base64", "DelimitedFiles", "LinearAlgebra", "Pkg", "Printf", "Random", "Serialization", "Sockets", "Test"]
+git-tree-sha1 = "537b61986d8a5fd21e577541f8f0735e481eb3ed"
+uuid = "28b8d3ca-fb5f-59d9-8090-bfdbd6d07a71"
+version = "0.39.1"
+
+[[InteractiveUtils]]
+deps = ["Markdown"]
+uuid = "b77e0a4c-d291-57a0-90e8-8db25a27a240"
+
+[[Interpolations]]
+deps = ["AxisAlgorithms", "LinearAlgebra", "OffsetArrays", "Random", "Ratios", "SharedArrays", "SparseArrays", "StaticArrays", "Test", "WoodburyMatrices"]
+git-tree-sha1 = "e8d1c381b1dc5343e5b6d37265acbe1de493d512"
+uuid = "a98d9a8b-a2ab-59e6-89dd-64a1c18fca59"
+version = "0.11.2"
+
+[[IntervalSets]]
+deps = ["Compat"]
+git-tree-sha1 = "9dc556002f23740de13946e8c2e41798e09a9249"
+uuid = "8197267c-284f-5f27-9208-e0e47529a953"
+version = "0.3.1"
+
+[[IterTools]]
+deps = ["SparseArrays", "Test"]
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+uuid = "c8e1da08-722c-5040-9ed9-7db0dc04731e"
+version = "1.1.1"
+
+[[IteratorInterfaceExtensions]]
+deps = ["Test"]
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+uuid = "82899510-4779-5014-852e-03e436cf321d"
+version = "0.1.1"
+
+[[JSON]]
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+uuid = "682c06a0-de6a-54ab-a142-c8b1cf79cde6"
+version = "0.20.0"
+
+[[Juno]]
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+uuid = "e5e0dc1b-0480-54bc-9374-aad01c23163d"
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+
+[[KernelDensity]]
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+
+[[LibGit2]]
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+
+[[Libdl]]
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+
+[[Libtask]]
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+[[LineSearches]]
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+uuid = "d3d80556-e9d4-5f37-9878-2ab0fcc64255"
+version = "7.0.1"
+
+[[LinearAlgebra]]
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+uuid = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
+
+[[Logging]]
+uuid = "56ddb016-857b-54e1-b83d-db4d58db5568"
+
+[[MCMCChains]]
+deps = ["AxisArrays", "DataFrames", "Distributions", "KernelDensity", "LinearAlgebra", "Plots", "Random", "RecipesBase", "Serialization", "Showoff", "SpecialFunctions", "Statistics", "StatsBase"]
+git-tree-sha1 = "0c2806774a855105b3825266fb3b71cb355e6ac7"
+uuid = "c7f686f2-ff18-58e9-bc7b-31028e88f75d"
+version = "0.3.7"
+
+[[MacroTools]]
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+git-tree-sha1 = "daecd9e452f38297c686eba90dba2a6d5da52162"
+uuid = "1914dd2f-81c6-5fcd-8719-6d5c9610ff09"
+version = "0.5.0"
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+[[MappedArrays]]
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+version = "0.2.1"
+
+[[Markdown]]
+deps = ["Base64"]
+uuid = "d6f4376e-aef5-505a-96c1-9c027394607a"
+
+[[Measures]]
+deps = ["Test"]
+git-tree-sha1 = "ddfd6d13e330beacdde2c80de27c1c671945e7d9"
+uuid = "442fdcdd-2543-5da2-b0f3-8c86c306513e"
+version = "0.3.0"
+
+[[Media]]
+deps = ["MacroTools", "Test"]
+git-tree-sha1 = "75a54abd10709c01f1b86b84ec225d26e840ed58"
+uuid = "e89f7d12-3494-54d1-8411-f7d8b9ae1f27"
+version = "0.5.0"
+
+[[Missings]]
+deps = ["Dates", "InteractiveUtils", "SparseArrays", "Test"]
+git-tree-sha1 = "d1d2585677f2bd93a97cfeb8faa7a0de0f982042"
+uuid = "e1d29d7a-bbdc-5cf2-9ac0-f12de2c33e28"
+version = "0.4.0"
+
+[[Mmap]]
+uuid = "a63ad114-7e13-5084-954f-fe012c677804"
+
+[[NLSolversBase]]
+deps = ["Calculus", "DiffEqDiffTools", "DiffResults", "Distributed", "ForwardDiff", "LinearAlgebra", "Random", "SparseArrays", "Test"]
+git-tree-sha1 = "0c6f0e7f2178f78239cfb75310359eed10f2cacb"
+uuid = "d41bc354-129a-5804-8e4c-c37616107c6c"
+version = "7.3.1"
+
+[[NNlib]]
+deps = ["Libdl", "LinearAlgebra", "MacroTools", "Requires", "Test"]
+git-tree-sha1 = "9ac5cd21484189339b27840818c4882d1b6df7fd"
+uuid = "872c559c-99b0-510c-b3b7-b6c96a88d5cd"
+version = "0.5.0"
+
+[[NaNMath]]
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+[[Random]]
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diff --git a/Project.toml b/Project.toml
new file mode 100644
index 000000000..24a5b43a6
--- /dev/null
+++ b/Project.toml
@@ -0,0 +1,18 @@
+name = "Turing"
+uuid = "fce5fe82-541a-59a6-adf8-730c64b5f9a0"
+version = "0.6.15"
+
+[deps]
+Bijectors = "76274a88-744f-5084-9051-94815aaf08c4"
+BinaryProvider = "b99e7846-7c00-51b0-8f62-c81ae34c0232"
+Distributions = "31c24e10-a181-5473-b8eb-7969acd0382f"
+Flux = "587475ba-b771-5e3f-ad9e-33799f191a9c"
+ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
+Libtask = "6f1fad26-d15e-5dc8-ae53-837a1d7b8c9f"
+MCMCChains = "c7f686f2-ff18-58e9-bc7b-31028e88f75d"
+MacroTools = "1914dd2f-81c6-5fcd-8719-6d5c9610ff09"
+ProgressMeter = "92933f4c-e287-5a05-a399-4b506db050ca"
+Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
+Requires = "ae029012-a4dd-5104-9daa-d747884805df"
+SpecialFunctions = "276daf66-3868-5448-9aa4-cd146d93841b"
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diff --git a/REQUIRE b/REQUIRE
index 45f73d0d8..b04b2ccc7 100644
--- a/REQUIRE
+++ b/REQUIRE
@@ -4,7 +4,7 @@ Requires 0.5.0
 Reexport 0.2.0
 Distributions 0.16.0
 ForwardDiff 0.8.0
-MCMCChains 0.3.4
+MCMCChains 0.3.7
 Libtask 0.2.5
 Flux 0.6.7
 MacroTools