diff --git a/Project.toml b/Project.toml
index 8c085d797..61e8788ba 100644
--- a/Project.toml
+++ b/Project.toml
@@ -21,6 +21,7 @@ LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 MacroTools = "1914dd2f-81c6-5fcd-8719-6d5c9610ff09"
 Markdown = "d6f4376e-aef5-505a-96c1-9c027394607a"
 NaNMath = "77ba4419-2d1f-58cd-9bb1-8ffee604a2e3"
+PrecompileTools = "aea7be01-6a6a-4083-8856-8a6e6704d82a"
 RecipesBase = "3cdcf5f2-1ef4-517c-9805-6587b60abb01"
 Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 Requires = "ae029012-a4dd-5104-9daa-d747884805df"
@@ -50,6 +51,7 @@ DomainSets = "0.6"
 Groebner = "0.3, 0.4"
 IfElse = "0.1"
 LaTeXStrings = "1.3"
+LambertW = "0.4.5"
 Latexify = "0.11, 0.12, 0.13, 0.14, 0.15, 0.16"
 MacroTools = "0.5"
 NaNMath = "0.3, 1"
@@ -64,7 +66,6 @@ SpecialFunctions = "0.7, 0.8, 0.9, 0.10, 1.0, 2"
 StaticArrays = "1.1"
 SymbolicUtils = "1.0.1"
 TreeViews = "0.3"
-LambertW = "0.4.5"
 julia = "1.6"
 
 [extras]
diff --git a/src/Symbolics.jl b/src/Symbolics.jl
index 1b7e0c066..dac0a9be1 100644
--- a/src/Symbolics.jl
+++ b/src/Symbolics.jl
@@ -2,45 +2,41 @@
 $(DocStringExtensions.README)
 """
 module Symbolics
+using PrecompileTools
 
-using DocStringExtensions, Markdown
+@recompile_invalidations begin
+    using DocStringExtensions, Markdown
+    using LinearAlgebra
+    using Reexport
+    using DomainSets
+    using Setfield
+    import DomainSets: Domain
+    
+    import SymbolicUtils: similarterm, istree, operation, arguments, symtype, metadata
 
-using LinearAlgebra
+    import SymbolicUtils: Term, Add, Mul, Pow, Sym, Div, BasicSymbolic,
+                          FnType, @rule, Rewriters, substitute,
+                          promote_symtype, isadd, ismul, ispow, isterm, issym, isdiv
 
-using Reexport
+    using SymbolicUtils.Code
 
-using DomainSets
+    import SymbolicUtils.Rewriters: Chain, Prewalk, Postwalk, Fixpoint
 
-using Setfield
+    import SymbolicUtils.Code: toexpr
 
-import DomainSets: Domain
-@reexport using SymbolicUtils
-
-import SymbolicUtils: similarterm, istree, operation, arguments, symtype, metadata
-
-import SymbolicUtils: Term, Add, Mul, Pow, Sym, Div, BasicSymbolic,
-                      FnType, @rule, Rewriters, substitute,
-                      promote_symtype, isadd, ismul, ispow, isterm, issym, isdiv
-
-using SymbolicUtils.Code
-
-import SymbolicUtils.Rewriters: Chain, Prewalk, Postwalk, Fixpoint
+    import ArrayInterface
 
-import SymbolicUtils.Code: toexpr
-
-import ArrayInterface
+    using RuntimeGeneratedFunctions
+    using SciMLBase, IfElse
+end
+@reexport using SymbolicUtils
 
-using RuntimeGeneratedFunctions
 RuntimeGeneratedFunctions.init(@__MODULE__)
-
 # re-export
 
 export simplify, substitute
 
-using SciMLBase, IfElse
 export Num
-using MacroTools
-import MacroTools: splitdef, combinedef, postwalk, striplines
 include("wrapper-types.jl")
 
 include("num.jl")