diff --git a/Project.toml b/Project.toml
index 53ca405..6b3e6c9 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "PeriodicGraphs"
 uuid = "18c5b727-b240-4874-878a-f2e242435bab"
 authors = ["Lionel Zoubritzky lionel.zoubritzky@gmail.com"]
-version = "0.9.0"
+version = "0.9.1"
 
 [deps]
 Graphs = "86223c79-3864-5bf0-83f7-82e725a168b6"
diff --git a/src/algorithms/rings.jl b/src/algorithms/rings.jl
index 3ea7582..c509c7e 100644
--- a/src/algorithms/rings.jl
+++ b/src/algorithms/rings.jl
@@ -1356,12 +1356,12 @@ function strong_erings(rs::Vector{Vector{Int}}, g::PeriodicGraph{D}, depth=15, r
     return origin, NoSymmetryGroup(length(ret)), ecycles, kp
 end
 
-function strong_erings(g::PeriodicGraph, depth=15, symmetries::AbstractSymmetryGroup=NoSymmetryGroup(g), dist::DistanceRecord=DistanceRecord(g,depth))
+function strong_erings(g::PeriodicGraph, depth::Integer=15, symmetries::AbstractSymmetryGroup=NoSymmetryGroup(g), dist::DistanceRecord=DistanceRecord(g,depth))
     rs, symmg = rings(g, depth, symmetries, dist)
     keep, symms, erings, kp = strong_erings(rs, g, depth, symmg)
     return rs[keep], symms, erings, kp
 end
-function strong_erings(g::PeriodicGraph, symmetries::AbstractSymmetryGroup=NoSymmetryGroup(g), dist::DistanceRecord=DistanceRecord(g,15))
+function strong_erings(g::PeriodicGraph, symmetries::AbstractSymmetryGroup, dist::DistanceRecord=DistanceRecord(g,15))
     strong_erings(g, 15, symmetries, dist)
 end
 
diff --git a/src/precompile.jl b/src/precompile.jl
index 8f0a4e7..48079b5 100644
--- a/src/precompile.jl
+++ b/src/precompile.jl
@@ -178,6 +178,11 @@ function _precompile_()
         @enforce Base.precompile(Tuple{typeof(swap_axes!),PeriodicGraph{i},NTuple{i,Int}})
         @enforce Base.precompile(Tuple{typeof(truncated_graph),PeriodicGraph{i}})
         @enforce Base.precompile(Tuple{typeof(quotient_graph),PeriodicGraph{i}})
+        for N in 1:i
+            @enforce Base.precompile(Tuple{typeof(slice_graph), PeriodicGraph{i}, SVector{N,Int}})
+            @enforce Base.precompile(Tuple{typeof(slice_graph), PeriodicGraph{i}, NTuple{N,Int}})
+        end
+        @enforce Base.precompile(Tuple{typeof(slice_graph), PeriodicGraph{i}, Vector{Int}})
 
         # Ring statistics
         dag{T} = Vector{PeriodicGraphs.JunctionNode{T}}
@@ -222,6 +227,13 @@ function _precompile_()
         @enforce Base.precompile(Tuple{typeof(PeriodicGraphs.sort_cycles), PeriodicGraph{i}, Vector{Vector{Int}}, Int, Tuple{Vector{Tuple{PeriodicVertex{i},PeriodicVertex{i}}}, Dict{Tuple{PeriodicVertex{i},PeriodicVertex{i}},Int}}})
         @enforce Base.precompile(Tuple{typeof(PeriodicGraphs.sort_cycles), PeriodicGraph{i}, Vector{Vector{Int}}, Int})
         @enforce Base.precompile(Tuple{typeof(PeriodicGraphs.sort_cycles), PeriodicGraph{i}, Vector{Vector{Int}}})
+        @enforce Base.precompile(Tuple{typeof(strong_erings), Vector{Vector{Int}}, PeriodicGraph{i}, Int, nosymm})
+        @enforce Base.precompile(Tuple{typeof(strong_erings), Vector{Vector{Int}}, PeriodicGraph{i}, Int})
+        @enforce Base.precompile(Tuple{typeof(strong_erings), Vector{Vector{Int}}, PeriodicGraph{i}})
+        @enforce Base.precompile(Tuple{typeof(strong_erings), PeriodicGraph{i}, Int, nosymm, dist})
+        @enforce Base.precompile(Tuple{typeof(strong_erings), PeriodicGraph{i}, Int, nosymm})
+        @enforce Base.precompile(Tuple{typeof(strong_erings), PeriodicGraph{i}, Int})
+        @enforce Base.precompile(Tuple{typeof(strong_erings), PeriodicGraph{i}})
         @enforce Base.precompile(Tuple{typeof(strong_rings), Vector{Vector{Int}}, PeriodicGraph{i}, Int, nosymm})
         @enforce Base.precompile(Tuple{typeof(strong_rings), Vector{Vector{Int}}, PeriodicGraph{i}, Int})
         @enforce Base.precompile(Tuple{typeof(strong_rings), Vector{Vector{Int}}, PeriodicGraph{i}})