diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 519c8f82eb..896f8f1dcc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        julia-version: ["1.6", "1.10", "1.11"]
+        julia-version: ["lts", "1", "pre"]
         os: [ubuntu-latest, macOS-latest, windows-latest]
     steps:
       - uses: actions/checkout@v4
diff --git a/.github/workflows/documenter.yml b/.github/workflows/documenter.yml
index 84248dc32f..e3c84347b6 100644
--- a/.github/workflows/documenter.yml
+++ b/.github/workflows/documenter.yml
@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: quarto-dev/quarto-actions/setup@v2
         with:
-          version: "1.3.353"
+          version: "1.6.39"
       - uses: julia-actions/setup-julia@latest
         with:
           version: "1.11"
diff --git a/Changelog.md b/Changelog.md
index 14163c14a5..f23dc95302 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [0.5.5] unreleased
 
+### Changed
+
+* Minimum Julia version is now 1.10 (the LTS which replaced 1.6)
+
 ### Removed
 
 * The geodesic regression example, first because it is not correct, second because it should become part of ManoptExamples.jl once it is correct.
diff --git a/Project.toml b/Project.toml
index 097ffd2e67..8a0f0ebd9c 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "Manopt"
 uuid = "0fc0a36d-df90-57f3-8f93-d78a9fc72bb5"
 authors = ["Ronny Bergmann <manopt@ronnybergmann.net>"]
-version = "0.5.4"
+version = "0.5.5"
 
 [deps]
 ColorSchemes = "35d6a980-a343-548e-a6ea-1d62b119f2f4"
@@ -16,7 +16,6 @@ Markdown = "d6f4376e-aef5-505a-96c1-9c027394607a"
 Preferences = "21216c6a-2e73-6563-6e65-726566657250"
 Printf = "de0858da-6303-5e67-8744-51eddeeeb8d7"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
-Requires = "ae029012-a4dd-5104-9daa-d747884805df"
 SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 
@@ -44,29 +43,28 @@ ColorSchemes = "3.5.0"
 ColorTypes = "0.9.1, 0.10, 0.11, 0.12"
 Colors = "0.11.2, 0.12, 0.13"
 DataStructures = "0.17, 0.18"
-Dates = "1.6"
+Dates = "1.10"
 ForwardDiff = "0.10"
 JuMP = "1.15"
 LRUCache = "1.4"
 LineSearches = "7.2.0"
-LinearAlgebra = "1.6"
+LinearAlgebra = "1.10"
 ManifoldDiff = "0.3.8, 0.4"
 Manifolds = "0.9.11, 0.10"
 ManifoldsBase = "0.15.18"
 ManoptExamples = "0.1.10"
-Markdown = "1.6"
+Markdown = "1.10"
 Plots = "1.30"
 Preferences = "1.4"
-Printf = "1.6"
+Printf = "1.10"
 QuadraticModels = "0.9"
-Random = "1.6"
+Random = "1.10"
 RecursiveArrayTools = "2, 3"
-Requires = "0.5, 1"
 RipQP = "0.6.4"
-SparseArrays = "1.6"
-Statistics = "1.6"
-Test = "1.6"
-julia = "1.8"
+SparseArrays = "1.10"
+Statistics = "1.10"
+Test = "1.10"
+julia = "1.10"
 
 [extras]
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
diff --git a/ext/ManoptJuMPExt.jl b/ext/ManoptJuMPExt.jl
index 5304a52a12..fad81f67cd 100644
--- a/ext/ManoptJuMPExt.jl
+++ b/ext/ManoptJuMPExt.jl
@@ -2,28 +2,15 @@ module ManoptJuMPExt
 
 using Manopt
 using LinearAlgebra
-if isdefined(Base, :get_extension)
-    using JuMP: JuMP
-else
-    # imports need to be relative for Requires.jl-based workflows:
-    # https://github.com/JuliaArrays/ArrayInterface.jl/pull/387
-    using ..JuMP: JuMP
-end
-const MOI = JuMP.MOI
+using JuMP: JuMP
 using ManifoldsBase
 using ManifoldDiff
+const MOI = JuMP.MOI
 
 function __init__()
-    # So that the user can use the convenient `Manopt.JuMP_Optimizer`
-    if isdefined(Base, :setglobal!)
-        setglobal!(Manopt, :JuMP_Optimizer, Optimizer)
-        setglobal!(Manopt, :JuMP_VectorizedManifold, VectorizedManifold)
-        setglobal!(Manopt, :JuMP_ArrayShape, ArrayShape)
-    else
-        Manopt.eval(:(const JuMP_Optimizer = $Optimizer))
-        Manopt.eval(:(const JuMP_VectorizedManifold = $VectorizedManifold))
-        Manopt.eval(:(const JuMP_ArrayShape = $ArrayShape))
-    end
+    setglobal!(Manopt, :JuMP_Optimizer, Optimizer)
+    setglobal!(Manopt, :JuMP_VectorizedManifold, VectorizedManifold)
+    setglobal!(Manopt, :JuMP_ArrayShape, ArrayShape)
     return nothing
 end
 
diff --git a/ext/ManoptLRUCacheExt.jl b/ext/ManoptLRUCacheExt.jl
index f416f50f42..365e9566dd 100644
--- a/ext/ManoptLRUCacheExt.jl
+++ b/ext/ManoptLRUCacheExt.jl
@@ -3,14 +3,7 @@ module ManoptLRUCacheExt
 using Manopt
 import Manopt: init_caches
 using ManifoldsBase
-
-if isdefined(Base, :get_extension)
-    using LRUCache
-else
-    # imports need to be relative for Requires.jl-based workflows:
-    # https://github.com/JuliaArrays/ArrayInterface.jl/pull/387
-    using ..LRUCache
-end
+using LRUCache
 
 # introduce LRU even as default.
 function Manopt.init_caches(
diff --git a/ext/ManoptLineSearchesExt.jl b/ext/ManoptLineSearchesExt.jl
index 61efbb8f22..52d8d3c2dd 100644
--- a/ext/ManoptLineSearchesExt.jl
+++ b/ext/ManoptLineSearchesExt.jl
@@ -3,14 +3,7 @@ module ManoptLineSearchesExt
 using Manopt
 import Manopt: LineSearchesStepsize
 using ManifoldsBase
-
-if isdefined(Base, :get_extension)
-    using LineSearches
-else
-    # imports need to be relative for Requires.jl-based workflows:
-    # https://github.com/JuliaArrays/ArrayInterface.jl/pull/387
-    using ..LineSearches
-end
+using LineSearches
 
 function (cs::Manopt.LineSearchesStepsize)(
     mp::AbstractManoptProblem,
diff --git a/ext/ManoptManifoldsExt/ManoptManifoldsExt.jl b/ext/ManoptManifoldsExt/ManoptManifoldsExt.jl
index 405c299111..b04da63fb5 100644
--- a/ext/ManoptManifoldsExt/ManoptManifoldsExt.jl
+++ b/ext/ManoptManifoldsExt/ManoptManifoldsExt.jl
@@ -19,11 +19,7 @@ using ManifoldDiff:
     adjoint_differential_shortest_geodesic_startpoint,
     adjoint_differential_shortest_geodesic_endpoint
 
-if isdefined(Base, :get_extension)
-    using Manifolds
-else
-    using ..Manifolds
-end
+using Manifolds
 
 Rn(::Val{:Manifolds}, args...; kwargs...) = Euclidean(args...; kwargs...)
 
diff --git a/ext/ManoptRecursiveArrayToolsExt.jl b/ext/ManoptRecursiveArrayToolsExt.jl
index aa627e7923..a8d4fa611e 100644
--- a/ext/ManoptRecursiveArrayToolsExt.jl
+++ b/ext/ManoptRecursiveArrayToolsExt.jl
@@ -11,11 +11,7 @@ import Manopt:
     set_parameter!
 using Manopt: _tex, _var, ManifoldDefaultsFactory, _produce_type
 
-if isdefined(Base, :get_extension)
-    using RecursiveArrayTools
-else
-    using ..RecursiveArrayTools
-end
+using RecursiveArrayTools
 
 @doc raw"""
     X = get_gradient(M::ProductManifold, ago::ManifoldAlternatingGradientObjective, p)
diff --git a/ext/ManoptRipQPQuadraticModelsExt.jl b/ext/ManoptRipQPQuadraticModelsExt.jl
index e70c4bc2e0..a740b6799f 100644
--- a/ext/ManoptRipQPQuadraticModelsExt.jl
+++ b/ext/ManoptRipQPQuadraticModelsExt.jl
@@ -10,15 +10,8 @@ using ManifoldsBase
 using LinearAlgebra: tril
 using SparseArrays: sparse
 
-if isdefined(Base, :get_extension)
-    using QuadraticModels: QuadraticModel
-    using RipQP: ripqp
-else
-    # imports need to be relative for Requires.jl-based workflows:
-    # https://github.com/JuliaArrays/ArrayInterface.jl/pull/387
-    using ..QuadraticModels: QuadraticModel
-    using ..RipQP: ripqp
-end
+using QuadraticModels: QuadraticModel
+using RipQP: ripqp
 
 function convex_bundle_method_subsolver(
     M::A, p_last_serious, linearization_errors, transported_subgradients
diff --git a/src/Manopt.jl b/src/Manopt.jl
index ff2c9987a7..dfb6417e64 100644
--- a/src/Manopt.jl
+++ b/src/Manopt.jl
@@ -146,7 +146,6 @@ using Preferences:
     @load_preference, @set_preferences!, @has_preference, @delete_preferences!
 using Printf
 using Random: AbstractRNG, default_rng, shuffle!, rand, randn!, randperm
-using Requires
 using SparseArrays
 using Statistics
 
@@ -273,32 +272,6 @@ function __init__()
             end
         end
     end
-    #
-    # Requires fallback for Julia < 1.9
-    #
-    @static if !isdefined(Base, :get_extension) # COV_EXCL_LINE
-        @require JuMP = "4076af6c-e467-56ae-b986-b466b2749572" begin
-            include("../ext/ManoptJuMPExt.jl")
-        end
-        @require Manifolds = "1cead3c2-87b3-11e9-0ccd-23c62b72b94e" begin
-            include("../ext/ManoptManifoldsExt/ManoptManifoldsExt.jl")
-        end
-        @require RecursiveArrayTools = "731186ca-8d62-57ce-b412-fbd966d074cd" begin
-            include("../ext/ManoptRecursiveArrayToolsExt.jl")
-        end
-        @require LineSearches = "d3d80556-e9d4-5f37-9878-2ab0fcc64255" begin
-            include("../ext/ManoptLineSearchesExt.jl")
-        end
-        @require LRUCache = "8ac3fa9e-de4c-5943-b1dc-09c6b5f20637" begin
-            include("../ext/ManoptLRUCacheExt.jl")
-        end
-        @require QuadraticModels = "f468eda6-eac5-11e8-05a5-ff9e497bcd19" begin
-            @require RipQP = "1e40b3f8-35eb-4cd8-8edd-3e515bb9de08" begin
-                include("../ext/ManoptRipQPQuadraticModelsExt.jl")
-            end
-        end
-    end
-
     return nothing
 end
 #