diff --git a/.gitignore b/.gitignore
index 2720985..f514c9e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 /env/
 /.qlot
 /README
+*.fasl
diff --git a/ChangeLog.md b/ChangeLog.md
index 62ac152..a82b2a3 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -2,6 +2,18 @@
 
 # ChangeLog
 
+<a id="x-28PROJECT-DOCS-2FCHANGELOG-3A-3A-7C4-2E2-2E1-7C-2040ANTS-DOC-2FLOCATIVES-3ASECTION-29"></a>
+
+## 4.2.1 (2024-12-15)
+
+Fixed the way how we set dynamic-space-size.
+
+<a id="x-28PROJECT-DOCS-2FCHANGELOG-3A-3A-7C4-2E2-2E0-7C-2040ANTS-DOC-2FLOCATIVES-3ASECTION-29"></a>
+
+## 4.2.0 (2024-12-14)
+
+Input variable `dynamic-space-size` was added. It can be used to default set memory size for `SBCL`.
+
 <a id="x-28PROJECT-DOCS-2FCHANGELOG-3A-3A-7C4-2E1-2E0-7C-2040ANTS-DOC-2FLOCATIVES-3ASECTION-29"></a>
 
 ## 4.1.0 (2024-05-17)
diff --git a/action.yml b/action.yml
index 102c6c7..e3d1213 100644
--- a/action.yml
+++ b/action.yml
@@ -8,6 +8,10 @@ inputs:
     required: false
     default: v23.10.14.114
 
+  dynamic-space-size:
+    description: 'If given, then will be used to change dynamic space size for SBCL. This value will be written to ~/.roswell/config'
+    required: false
+
   asdf-system:
     description: 'ASDF system to install'
     required: false
@@ -259,6 +263,11 @@ runs:
             curl -L https://raw.githubusercontent.com/roswell/roswell/master/scripts/install-for-ci.sh | bash -xeo pipefail
         fi
 
+        if [[ "${{ inputs.dynamic-space-size }}" != "" ]]; then
+            echo ::group::Changing Dynamic Space Size in Roswell Config
+            ros config set dynamic-space-size ${{ inputs.dynamic-space-size }}
+        fi
+
         echo ::endgroup::
         
     - if: inputs.cache == 'false' || steps.roswell-cache-restore.outputs.cache-hit != 'true'
diff --git a/changelog.lisp b/changelog.lisp
index dedd513..89be45f 100644
--- a/changelog.lisp
+++ b/changelog.lisp
@@ -8,8 +8,13 @@
 (defchangelog (:ignore-words ("ASDF"
                               "PATH"
                               "CL"
+                              "SBCL"
                               "HOME"))
 
+  (4.2.1 2024-12-15
+         "Fixed the way how we set dynamic-space-size.")
+  (4.2.0 2024-12-14
+         "Input variable `dynamic-space-size` was added. It can be used to default set memory size for SBCL.")
   (4.1.0 2024-05-17
          "
 # Added
diff --git a/qlfile.lock b/qlfile.lock
index 5b007a6..81abab8 100644
--- a/qlfile.lock
+++ b/qlfile.lock
@@ -1,11 +1,11 @@
 ("quicklisp" .
  (:class qlot/source/dist:source-dist
-  :initargs (:distribution "http://beta.quicklisp.org/dist/quicklisp.txt" :%version :latest)
-  :version "2023-10-21"))
+  :initargs (:distribution "https://beta.quicklisp.org/dist/quicklisp.txt" :%version :latest)
+  :version "2024-10-12"))
 ("ultralisp" .
  (:class qlot/source/dist:source-dist
-  :initargs (:distribution "http://dist.ultralisp.org" :%version :latest)
-  :version "20240304201501"))
+  :initargs (:distribution "https://dist.ultralisp.org" :%version :latest)
+  :version "20241214090000"))
 ("sly" .
  (:class qlot/source/github:source-github
   :initargs (:repos "svetlyak40wt/sly" :ref nil :branch "patches" :tag nil)