diff --git a/detectors.yaml b/detectors.yaml
index 9e81c805bca7447f7aba2f96e01f770910854602..a796b6f30f63cc9b0d36653adc941e7298535f1c 100644
--- a/detectors.yaml
+++ b/detectors.yaml
@@ -6,14 +6,6 @@ detectors:
       version: main
     main:
       version: main
-    23.09.0:
-      version: 23.09.0
-      patches:
-      - https://github.com/eic/epic/pull/520.patch
-    23.09.1:
-      version: 23.09.1
-      patches:
-      - https://github.com/eic/epic/pull/520.patch
     23.10.0:
       version: 23.10.0
     23.11.0:
@@ -28,3 +20,5 @@ detectors:
       version: 24.03.0
     24.03.1:
       version: 24.03.1
+    24.04.0:
+      version: 24.04.0
diff --git a/eic-spack.sh b/eic-spack.sh
index e3c3f722a2a71e2f9bcd07d7b16e635965d825a9..43f01d7ad8a888c408b7e837b62a1e848adeb1bd 100644
--- a/eic-spack.sh
+++ b/eic-spack.sh
@@ -3,7 +3,7 @@ EICSPACK_ORGREPO="eic/eic-spack"
 
 ## EIC spack commit hash or github version, e.g. v0.19.7
 ## note: nightly builds could use a branch e.g. releases/v0.19
-EICSPACK_VERSION="85287c4753174c59f6708e49b83f2c6f4f1014eb"
+EICSPACK_VERSION="51841e81dc80250c0cad5f69349aa8ed7fab7cd0"
 
 ## Space-separated list of eic-spack cherry-picks
 read -r -d '' EICSPACK_CHERRYPICKS <<- \
diff --git a/spack-environment/packages.yaml b/spack-environment/packages.yaml
index a3881e03b0072c55533aa82ec4e4c9e02567a239..8f7e51f40b20bcfbe0ee4aa34d834d145a8aa12f 100644
--- a/spack-environment/packages.yaml
+++ b/spack-environment/packages.yaml
@@ -94,7 +94,7 @@ packages:
     - '@1.1.12'
   eicrecon:
     require:
-    - '@1.11.0'
+    - '@1.12.0'
   eigen:
     require:
     - '@3.4.0'