diff --git a/.github/ISSUE_TEMPLATE.md b/.github/ISSUE_TEMPLATE.md
index fc426618de5..cd89fbb6453 100644
--- a/.github/ISSUE_TEMPLATE.md
+++ b/.github/ISSUE_TEMPLATE.md
@@ -25,4 +25,4 @@ If this is a **feature request**, show what you expect to happen if the feature
 
 
 #### Current Version:
-v4.5.0
+v4.6.0-rc1
diff --git a/doxygen/doxygen.cfg b/doxygen/doxygen.cfg
index 41ea76ecfed..068bb646eea 100644
--- a/doxygen/doxygen.cfg
+++ b/doxygen/doxygen.cfg
@@ -38,7 +38,7 @@ PROJECT_NAME           = "Stan Math Library"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 4.5.0
+PROJECT_NUMBER         = 4.6.0
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/stan/math/version.hpp b/stan/math/version.hpp
index 6108cc3aff4..47663c056c7 100644
--- a/stan/math/version.hpp
+++ b/stan/math/version.hpp
@@ -12,7 +12,7 @@
 #endif
 
 #define STAN_MATH_MAJOR 4
-#define STAN_MATH_MINOR 5
+#define STAN_MATH_MINOR 6
 #define STAN_MATH_PATCH 0
 
 namespace stan {