diff --git a/src/InMemoryDatasets.jl b/src/InMemoryDatasets.jl
index 5159ce1..afbda55 100644
--- a/src/InMemoryDatasets.jl
+++ b/src/InMemoryDatasets.jl
@@ -198,7 +198,7 @@ include("precompile/precompile.jl")
 include("precompile/warmup.jl")
 include("precompile/create_sysimage.jl")
 # FIXME currently v1.9.0 precompilation and loading cause an enormous amount of allocation - v1.10 seems ok
-VERSION != v"1.9.0" &&  _precompile()
+_precompile()
 
 function __init__()
    if Threads.nthreads() == 1
diff --git a/src/precompile/precompile.jl b/src/precompile/precompile.jl
index 51f62c7..b0f5497 100644
--- a/src/precompile/precompile.jl
+++ b/src/precompile/precompile.jl
@@ -546,6 +546,8 @@ function _precompile()
         Base.precompile(Tuple{Core.kwftype(typeof(transpose)),NamedTuple{(:id, :threads), Tuple{Symbol, Bool}},typeof(transpose),Dataset,Vector{Symbol}})
         Base.precompile(Tuple{Core.kwftype(typeof(transpose)),NamedTuple{(:threads,), Tuple{Bool}},typeof(transpose),Dataset,UnitRange{Int64}})
         Base.precompile(Tuple{Core.kwftype(typeof(transpose)),NamedTuple{(:threads,), Tuple{Bool}},typeof(transpose),GroupBy,Vector{Int64}})
+        Base.precompile(Tuple{Core.kwftype(typeof(flatten!)),NamedTuple{(:threads,), Tuple{Bool}},typeof(transpose),Dataset,UnitRange{Int64}})
+        Base.precompile(Tuple{Core.kwftype(typeof(flatten!)),NamedTuple{(:threads,), Tuple{Bool}},typeof(transpose),Dataset,Int})
         VERSION >= v"1.9" && IMD.warmup()
     return nothing
 end
\ No newline at end of file