diff --git a/Project.toml b/Project.toml
index a8f6d8da0485..eb46435051c4 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "Oscar"
 uuid = "f1435218-dba5-11e9-1e4d-f1a5fab5fc13"
 authors = ["The OSCAR Team <oscar@oscar-system.org>"]
-version = "1.2.0"
+version = "1.3.0-DEV"
 
 [deps]
 AbstractAlgebra = "c3fe647b-3220-5bb0-a1ea-a7954cac585d"
diff --git a/README.md b/README.md
index 5dba2c6a242c..70f0b3d3033a 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,8 @@ julia> using Oscar
  / _ \ / ___| / ___|  / \  |  _ \   |  Combining ANTIC, GAP, Polymake, Singular
 | | | |\___ \| |     / _ \ | |_) |  |  Type "?Oscar" for more information
 | |_| | ___) | |___ / ___ \|  _ <   |  Manual: https://docs.oscar-system.org
- \___/ |____/ \____/_/   \_\_| \_\  |  Version 1.2.0
+ \___/ |____/ \____/_/   \_\_| \_\  |  Version 1.3.0-DEV
+
 julia> k, a = quadratic_field(-5)
 (Imaginary quadratic field defined by x^2 + 5, sqrt(-5))
 
@@ -113,7 +114,7 @@ pm::Array<topaz::HomologyGroup<pm::Integer> >
 If you have used OSCAR in the preparation of a paper please cite it as described below:
 
     [OSCAR]
-        OSCAR -- Open Source Computer Algebra Research system, Version 1.2.0,
+        OSCAR -- Open Source Computer Algebra Research system, Version 1.3.0-DEV,
         The OSCAR Team, 2024. (https://www.oscar-system.org)
     [OSCAR-book]
         Wolfram Decker, Christian Eder, Claus Fieker, Max Horn, Michael Joswig, eds.
@@ -126,7 +127,7 @@ If you are using BibTeX, you can use the following BibTeX entries:
       key          = {OSCAR},
       organization = {The OSCAR Team},
       title        = {OSCAR -- Open Source Computer Algebra Research system,
-                      Version 1.2.0},
+                      Version 1.3.0-DEV},
       year         = {2024},
       url          = {https://www.oscar-system.org},
       }
diff --git a/gap/OscarInterface/PackageInfo.g b/gap/OscarInterface/PackageInfo.g
index 8a7bbc2c1a8c..651dee91d3ea 100644
--- a/gap/OscarInterface/PackageInfo.g
+++ b/gap/OscarInterface/PackageInfo.g
@@ -10,7 +10,7 @@ SetPackageInfo( rec(
 
 PackageName := "OscarInterface",
 Subtitle := "GAP interface to OSCAR",
-Version := "1.2.0",
+Version := "1.3.0-DEV",
 Date := "30/10/2024", # dd/mm/yyyy format
 License := "GPL-2.0-or-later",