diff --git a/ext/SymbolicIndexingInterfaceSymbolicUtilsExt.jl b/ext/SymbolicIndexingInterfaceSymbolicUtilsExt.jl
index ea70316..df48aa3 100644
--- a/ext/SymbolicIndexingInterfaceSymbolicUtilsExt.jl
+++ b/ext/SymbolicIndexingInterfaceSymbolicUtilsExt.jl
@@ -1,6 +1,11 @@
 module SymbolicIndexingInterfaceSymbolicUtilsExt
 
-using SymbolicIndexingInterface, SymbolicUtils
+using SymbolicIndexingInterface
+@static if isdefined(Base, :get_extension)
+    using SymbolicUtils
+else
+    using ..SymbolicUtils
+end
 
 SymbolicIndexingInterface.issymbolic(::Type{<:SymbolicUtils.BasicSymbolic}) = Symbolic()
 
diff --git a/ext/SymbolicIndexingInterfaceSymbolicsExt.jl b/ext/SymbolicIndexingInterfaceSymbolicsExt.jl
index dd767a9..f8acbbf 100644
--- a/ext/SymbolicIndexingInterfaceSymbolicsExt.jl
+++ b/ext/SymbolicIndexingInterfaceSymbolicsExt.jl
@@ -1,6 +1,12 @@
 module SymbolicIndexingInterfaceSymbolicsExt
 
-using SymbolicIndexingInterface, Symbolics
+using SymbolicIndexingInterface
+
+@static if isdefined(Base, :get_extension)
+    using Symbolics
+else
+    using ..Symbolics
+end
 
 SymbolicIndexingInterface.issymbolic(::Type{<:Symbolics.Num}) = Symbolic()