diff --git a/VERSION b/VERSION
index bd52db81d..e977f5eae 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.0.0
\ No newline at end of file
+9.1.0
\ No newline at end of file
diff --git a/slsDetectorServers/ctbDetectorServer/bin/ctbDetectorServer_developer b/slsDetectorServers/ctbDetectorServer/bin/ctbDetectorServer_developer
deleted file mode 100755
index a52f0b609..000000000
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diff --git a/slsDetectorServers/ctbDetectorServer/bin/ctbDetectorServerv9.1.0 b/slsDetectorServers/ctbDetectorServer/bin/ctbDetectorServerv9.1.0
new file mode 100755
index 000000000..aa2b820f4
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diff --git a/slsDetectorServers/eigerDetectorServer/bin/eigerDetectorServer_developer b/slsDetectorServers/eigerDetectorServer/bin/eigerDetectorServerv9.1.0
similarity index 50%
rename from slsDetectorServers/eigerDetectorServer/bin/eigerDetectorServer_developer
rename to slsDetectorServers/eigerDetectorServer/bin/eigerDetectorServerv9.1.0
index a4b200678..d7a9dee61 100755
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diff --git a/slsDetectorServers/gotthard2DetectorServer/bin/gotthard2DetectorServer_developer b/slsDetectorServers/gotthard2DetectorServer/bin/gotthard2DetectorServer_developer
deleted file mode 100755
index bc9ad1e63..000000000
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diff --git a/slsDetectorServers/gotthard2DetectorServer/bin/gotthard2DetectorServerv9.1.0 b/slsDetectorServers/gotthard2DetectorServer/bin/gotthard2DetectorServerv9.1.0
new file mode 100755
index 000000000..582a1c24f
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diff --git a/slsDetectorServers/gotthardDetectorServer/bin/gotthardDetectorServer_developer b/slsDetectorServers/gotthardDetectorServer/bin/gotthardDetectorServer_developer
deleted file mode 100755
index 6724680c7..000000000
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diff --git a/slsDetectorServers/gotthardDetectorServer/bin/gotthardDetectorServerv9.1.0 b/slsDetectorServers/gotthardDetectorServer/bin/gotthardDetectorServerv9.1.0
new file mode 100755
index 000000000..1ed9bf717
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diff --git a/slsDetectorServers/jungfrauDetectorServer/bin/jungfrauDetectorServer_developer b/slsDetectorServers/jungfrauDetectorServer/bin/jungfrauDetectorServerv9.1.0
similarity index 68%
rename from slsDetectorServers/jungfrauDetectorServer/bin/jungfrauDetectorServer_developer
rename to slsDetectorServers/jungfrauDetectorServer/bin/jungfrauDetectorServerv9.1.0
index 6525af9d6..36ccd51bb 100755
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diff --git a/slsDetectorServers/moenchDetectorServer/bin/moenchDetectorServer_developer b/slsDetectorServers/moenchDetectorServer/bin/moenchDetectorServer_developer
deleted file mode 100755
index 3dd94a14d..000000000
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diff --git a/slsDetectorServers/moenchDetectorServer/bin/moenchDetectorServerv9.1.0 b/slsDetectorServers/moenchDetectorServer/bin/moenchDetectorServerv9.1.0
new file mode 100755
index 000000000..924c6fa65
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diff --git a/slsDetectorServers/mythen3DetectorServer/bin/mythen3DetectorServer_developer b/slsDetectorServers/mythen3DetectorServer/bin/mythen3DetectorServer_developer
deleted file mode 100755
index 91195ea74..000000000
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diff --git a/slsDetectorServers/mythen3DetectorServer/bin/mythen3DetectorServerv9.1.0 b/slsDetectorServers/mythen3DetectorServer/bin/mythen3DetectorServerv9.1.0
new file mode 100755
index 000000000..238fbe0ce
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diff --git a/slsDetectorServers/xilinx_ctbDetectorServer/bin/xilinx_ctbDetectorServer_developer b/slsDetectorServers/xilinx_ctbDetectorServer/bin/xilinx_ctbDetectorServer_developer
deleted file mode 100755
index 73f0e1655..000000000
Binary files a/slsDetectorServers/xilinx_ctbDetectorServer/bin/xilinx_ctbDetectorServer_developer and /dev/null differ
diff --git a/slsDetectorServers/xilinx_ctbDetectorServer/bin/xilinx_ctbDetectorServerv9.1.0 b/slsDetectorServers/xilinx_ctbDetectorServer/bin/xilinx_ctbDetectorServerv9.1.0
new file mode 100755
index 000000000..1a8da05bc
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diff --git a/slsSupportLib/include/sls/versionAPI.h b/slsSupportLib/include/sls/versionAPI.h
index dde27f97d..5b223099e 100644
--- a/slsSupportLib/include/sls/versionAPI.h
+++ b/slsSupportLib/include/sls/versionAPI.h
@@ -1,13 +1,13 @@
 // SPDX-License-Identifier: LGPL-3.0-or-other
 // Copyright (C) 2021 Contributors to the SLS Detector Package
 /** API versions */
-#define APICTB       "developer 0x241107"
-#define APIGOTTHARD  "developer 0x241107"
-#define APIGOTTHARD2 "developer 0x241107"
-#define APIMOENCH    "developer 0x241107"
-#define APIXILINXCTB "developer 0x241107"
-#define APIEIGER     "developer 0x241107"
-#define APIJUNGFRAU  "developer 0x241120"
-#define APIMYTHEN3   "developer 0x241121"
-#define APILIB       "developer 0x241122"
-#define APIRECEIVER  "developer 0x241122"
+#define APILIB       "9.1.0 0x250204"
+#define APIRECEIVER  "9.1.0 0x250204"
+#define APICTB       "9.1.0 0x250204"
+#define APIGOTTHARD  "9.1.0 0x250204"
+#define APIGOTTHARD2 "9.1.0 0x250204"
+#define APIJUNGFRAU  "9.1.0 0x250204"
+#define APIMYTHEN3   "9.1.0 0x250204"
+#define APIMOENCH    "9.1.0 0x250204"
+#define APIXILINXCTB "9.1.0 0x250204"
+#define APIEIGER     "9.1.0 0x250204"